which connective tissue layer directly surrounds individual axons in a nerve? which connective tissue layer directly surrounds individual axons in a nerve? endomysium endoneurium epineurium perineurium
Answers
Endoneurium connective tissue layer directly surrounds individual axons in a nerve.
Each axon is lined with a layer of connective tissue called the endoneuria. This connective tissue consists of an inner sheath composed of a dense collagen matrix. The function of the endoneurium is to act as a protection against the invasion of certain molecules, but also to provide nutrients and energy to the trapped neurons, ultimately maintaining a constant environment by maintaining a slight positive pressure.
The endoneurim is a thin layer of collagenous connective tissue that surrounds individual nerve fibers and joins the fine connective tissue layers of the nerve root. In the nerve trunk, bundles of myelinated and unmyelinated nerve fibers are arranged in fascicles.
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Related Questions
An important step in the process of translation is
Answers
Answer:
The formation of proteins( a polypeptide chain) by using RNA as a template
It consists of three important steps;
Initiation
Elongation
Termination
Explanation:
mendel researched pea plants that contained (answer with a number) varieties of traits even though he only selected for 7 of them.
Answers
Mendel researched pea plants that contained thousands of varieties of traits, even though he only selected for 7 of them.
Mendel's research on pea plants involved studying a wide range of traits beyond the 7 traits he specifically selected for in his experiments. Pea plants exhibit a diverse array of characteristics, including flower color, seed shape, pod color, plant height, and many more. Mendel carefully observed and recorded these traits in various pea plant varieties to establish the principles of inheritance.
Although he focused on a limited number of traits in his experimental crosses, his broader observations and understanding of the extensive variability in pea plant traits laid the foundation for his groundbreaking work on genetics and the laws of inheritance.
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what is the ultimate higher-order olfactory destination?
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The ultimate higher-order olfactory destination is the olfactory cortex, specifically the piriform cortex.
It is responsible for processing and analyzing olfactory information received from the olfactory bulb, which is the primary processing center for smell. The piriform cortex plays a crucial role in odor perception, recognition, and memory formation associated with smells.
It receives input from the olfactory bulb and sends outputs to various regions of the brain, including the amygdala (involved in emotional and associative responses to odors), the hippocampus (related to memory formation), and the orbitofrontal cortex (involved in the integration of sensory information with emotional and cognitive processes).
These connections allow for the complex interpretation and integration of olfactory information, contributing to our perception and experience of smell.
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A student wants to investigate osmosis. A carrot was placed in a dilute solution.
a) What will happen to its mass?
b) The carrot was placed in 0.4 mol/dm 3 solution. Its mass did not change.
c) What does this tell us about the concentration of the carrot?
d) The carrot was placed in a concentrated solution. What will happen to its mass?
Answers
a) When a carrot is submerged in a diluted solution, water will osmosis into the carrot cells. As a result, the cells will become turgid and the carrot's mass will rise.
b) The carrot's inability to alter in mass when submerged in a 0.4 mol/dm3 solution shows that the solute concentration—which includes salts and sugars—within the carrot cells is also 0.4 mol/dm3. There is no net movement of water into or out of the cells at this concentration.
c) This indicates that the carrot and the 0.4 mol/dm3 solution have come to an equilibrium. At this concentration, the passage of water into and out of the cells is balanced, and there is no net gain or loss of water.
d) If the carrot is submerged in a concentrated solution, water will osmotically escape from the cells, plasmolyzing them. The mass of the carrot will shrink as a result.
OsmosisOsmosis is the transfer of water molecules from a region with a high concentration of water to a region with a low concentration of water through a membrane that is selectively permeable. Since a diluted solution contains more water molecules than carrot cells do, water will osmotically flow from the fluid into the cells. The carrot cells become turgid, which is another word for inflated and hard, as a result of this water inflow. The carrot's mass so grows as a result.The carrot's inertness in a 0.4 mol/dm3 solution shows that the solute concentration inside the cells of the carrot is also 0.4 mol/dm3. At this concentration, there is no net gain or loss of water since the flow of water into and out of the cells is balanced. This is due to the fact that the solute concentration in the carrot cells and the solution are the same. Isotonic describes this condition.learn more about osmosis here
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cell division in Laphorina superb
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Lophorina Superba is a bird species and therefore the undergone both mitotic cell division for somatic cells and meiotic cell division for germinal cells.
What is mitotic cell division?The process of mitosis cell division is based on the generation of genetically identical body cells, while meiotic cell division generates cell having half of the genetic material which will form the gametes in species of sexual reproduction such as for example birds.
Therefore, with this data, we can see that both mitotic and meiotic cell divisions occur in bird species such as Lophorina Superba.
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which of the following statements is false regarding giardia
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Statement C is false , A weight loss of 50 pounds due to Giardia is very unusual regarding Giardia.
Statement C, which states that a weight loss of 50 pounds due to Giardia is very unusual, is false. Giardia infection can cause chronic diarrhea and abdominal pain, leading to significant weight loss. The fact that the college student has had Giardia on 6 occasions and has lost 50 pounds suggests that he may have a more serious form of the infection. The low IgA level in the lab results adds further support to the possibility of an immunodeficiency. The other statements, including the fact that Giardia is often spread from person to person easily (D) and can result in iron deficiency anemia due to gastrointestinal blood loss (E), are generally true regarding Giardia.
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The complete Question is:
A 22-year old college student is seen because he has had severe chronic diarrhea and a stool for O&P is positive for Giardia lamblia. He has lost 50 pounds in weight and has been treated for Giardia on 6 occasions only to have it reoccur. You are concerned that he has an immunodeficiency and lab results demonstrate a very low IgA level. Which of the following statements would be false regarding Giardia?
A. It is one of the causes of H2S or rotten egg gas
B. It is often a self-limiting disease
C. A weight loss of 50 pounds due to Giardia is very unusual
D. You are not surprised when 5 of 11 dorm mates are found to have Giardia because it is spread from person to person easily
E. It often results in iron deficiency anemia due to gastrointestinal blood loss
what object is different on every planet in the solar system
Answers
Answer:
The climate
Explanation:
The climate is different on each planet in this solar system because of the factors:
rotating speed, revolving speed, how close it is to the sun, and whether it has an atmosphere, and if it has an atmosphere, how dense is the ozone layer.
Answer:
gravity
Explanation:
That’s because the planets weigh different amounts, and therefore the force of gravity is different from planet to planet. For example, if you weigh 100 pounds on Earth, you would weigh only 38 pounds on Mercury. That’s because Mercury weighs less than Earth, and therefore its gravity would pull less on your body.
which hormon is released by heart muscle in response t excessive chamber vloume
Answers
The hormone released by the heart muscle in response to excessive chamber volume is called atrial natriuretic peptide (ANP).
ANP is primarily released from the atria of the heart in response to increased stretching of the cardiac muscle cells, which occurs when there is an increase in blood volume or pressure. Its main function is to promote the excretion of sodium and water by the kidneys, leading to a decrease in blood volume and pressure.
ANP also has other effects, such as dilating blood vessels and inhibiting the secretion of certain hormones, including aldosterone and vasopressin, which play roles in regulating fluid and electrolyte balance. By promoting diuresis and vasodilation, ANP helps to counteract the effects of excessive blood volume and pressure, and maintain homeostasis in the body.
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Please choose the answer that best fills in the blanks of this statement in the correct order. Photosynthesis proceeds in two phases: the light-_______ reactions which proceed only in the presence of sunlight, and the light-________ reactions which proceed regardless of the lighting conditions.
Answers
Answer:
first blank dependent
second blank independent
Explanation:
Light Dependent reactions depend on light and right independent reactions don't
Moving very large molecules out of the cell using a vesicle from the cell membrane is known as?
Answers
Answer: exocytosis
Explanation:
- When molecules are too large or too charged to cross the plasma membrane by diffusion or osmosis, they use vesicular transport, also known as exocytosis. In vesicular transport/exocytosis, vesicles allow large molecules to exit the cell because the vesicle fuses with the plasma membrane and its contents spill out.
hope this helps :)
If someone stole your DNA, could they steal your identity?
Answers
Yes
Criminals might steal DNA to use the genetic identity of their victim
Answer:
yes and no
Explanation:
if someone actually stole your DNA you wouldn't be alive right now,
but if someone stole "parts" of your DNA you would still be the same person because it doesn't matter what you look like you are your own person an example of this are identical twins, identical twins share the same exact DNA but they aren't the exact same person since they both can like different stuff and have different personalities. but if you mean in a biological stand point "if someone stole your DNA, could they steal your identity" of course not, at least not with our technology.
also what an odd question I like it :)
What percent of global earthquakes occur within the Mediterranean-
Asiatic Belt?
a 15%
b 56%
C 92%
d 10%
Answers
Bill is a 54 year old Asian male who sustained a full thickness burn to 20% of his body while at work three days ago. He was exposed to a hot liquid at temperatures exceeding 180°F. The burn occurred primarily on his right arm, hand, and right side of his chest. He is currently hospitalized in a burn unit and is in stable condition.
1. How do thermal burns induce irreversible cellular injury?
2. What is the impact of this degree and extent of burn on Bills cardiovascular system?
3. What is the role of eschar formation in a full-thickness burn?
4. How are full thickness burns different than partial thickness burns with regard to clinical manifestations?
5. What complications are likely given the severity of Bill's burn injury?
6. Would the burn Bill sustained be classified as minor, moderate, or major given the American Butn Association classification?
Answers
Thermal burns induce irreversible cellular injury through multiple mechanisms, including direct thermal damage, coagulation necrosis, and inflammatory responses.
The high temperature causes denaturation of proteins, disruption of cell membranes, and loss of cellular function. Additionally, thermal burns can lead to the release of pro-inflammatory mediators, such as cytokines and chemokines, further exacerbating tissue damage and initiating a cascade of events that contribute to irreversible injury.
The degree and extent of burn that Bill has suffered can have a significant impact on his cardiovascular system. Burn injuries cause a systemic response known as the "burn shock." In extensive burns, the release of inflammatory mediators, fluid loss, and increased capillary permeability can result in hypovolemia, decreased cardiac output, and reduced tissue perfusion.
This can lead to hypotension, tachycardia, and even cardiovascular collapse if not managed promptly. Close monitoring of Bill's cardiovascular status and appropriate fluid resuscitation are crucial in preventing further complications.
Eschar formation plays a vital role in full-thickness burns. An eschar is a dry, thick, leathery crust that forms over the burned area. In full-thickness burns, the damage extends through the entire dermis and often involves underlying tissues, such as muscles and tendons.
The eschar acts as a barrier, protecting the wound from infection and reducing fluid loss. However, it also hinders the natural healing process and necessitates surgical interventions, such as escharotomy or excision, to promote wound healing and prevent complications.
Full-thickness burns differ from partial-thickness burns in terms of clinical manifestations. In partial-thickness burns, only the epidermis and a portion of the dermis are affected, leading to symptoms such as pain, redness, blistering, and swelling.
In contrast, full-thickness burns extend through the entire dermis and can involve underlying structures. Consequently, full-thickness burns may present as charred, white or black, dry, and insensate areas. The absence of pain in full-thickness burns is due to the destruction of nerve endings, requiring more invasive treatments like skin grafting for wound closure.
Given the severity of Bill's burn injury, several complications are likely to arise. Infections are a significant concern due to the loss of skin's protective barrier and compromised immune response. Hypertrophic scars and contractures may develop, leading to functional limitations and disfigurement.
Respiratory complications, such as inhalation injury or pneumonia, can occur if Bill was exposed to smoke or hot gases. Metabolic imbalances, including hypermetabolic response and electrolyte disturbances, are common in severe burns. Psychological distress, including post-traumatic stress disorder (PTSD) and depression, is also possible.
Prompt and comprehensive burn care, including wound management, infection control, nutrition support, and rehabilitation, is essential in minimizing these complications and optimizing Bill's recovery.
Based on the American Burn Association classification, Bill's burn injury would likely be classified as a major burn. Major burns typically involve a high percentage of total body surface area (20% in this case) and can have significant systemic effects.
The classification takes into account both the extent of the burn and its location, as burns on certain body parts, such as the face, hands, feet, or perineum, can have functional and cosmetic implications. Bill's burn injury requires specialized care in a burn unit due to its severity and potential complications.
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Two of the organisms seemed to be more closely
related to each other than to the other vertebrates.
The type of evidence shown is using the field of -
Answers
The position and shape of the bones in the forelimbs of four present vertebrates were studied.
Two of the organisms seem to be more closely related to each other then to the other vertebrates this relationship was most likely based on evidence using the field of Comparative anatomy
What is comparative anatomy?
The work of French naturalist Pierre Belon, who demonstrated in 1555 that the skeletons of humans and birds are composed of identical parts and organised in the same way, is credited with giving rise to modern comparative anatomy. With the work of two French naturalists, Georges-Louis Leclerc, comte de Buffon and Louis-Jean-Marie Daubenton, who studied the anatomies of a variety of animals, comparative anatomy advanced quickly from this modest beginning in the 18th century. The topic was given a stronger solid foundation by French zoologist Georges Cuvier in the early 19th century when he claimed that animals' structural and functional traits are the result of interactions with their environment.To know more about comparative anatomy, click the link given below:
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A regulatory sequence of DNA that is 10,000 base pairs away from the gene it regulates is mutated. The result is that the gene being regulated is now expressed at a higher rate compared to when this regulatory sequence was not mutated. What would this sequence of DNA best be called
Answers
The regulatory sequence of DNA that is mutated and leads to increased expression of the regulated gene is likely an enhancer sequence. Enhancer sequences are regulatory sequences that can be located far away from the gene they regulate, even tens of thousands of base pairs away.
When an enhancer sequence is activated, it can increase the expression of the gene it regulates by interacting with transcription factors and promoting transcription initiation. Mutations in enhancer sequences can either disrupt or enhance their function, leading to changes in gene expression. In this case, the mutation in the enhancer sequence appears to have enhanced its function, resulting in increased expression of the regulated gene.
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can a weak entity be dependent on another weak entity?
Answers
Yes, a weak entity can be dependent on another weak entity. In a database design, a weak entity is an entity that cannot exist without the existence of another related entity, known as its owner entity.
When two weak entities are connected, they can form a relationship where one weak entity depends on the other weak entity for its identification or existence.
This type of relationship is referred to as a identifying relationship. The owner entity plays a crucial role in providing the necessary attributes or identification for the dependent weak entity.
Thus, the existence and identification of the dependent weak entity are dependent on the existence and identification of the owner weak entity in this scenario.
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Chimpanzee communication involves different combinations of sounds. What are some examples of these sounds?.
Answers
Different combinations of sounds, including grunts, pants, and hoots, are used by chimpanzees to communicate. Chimps communicate with other chimps by making simple gestures like waving their hands in their general direction or reaching out their hands pleadingly for assistance.
They then rely on the other animal's intelligence to assess the situation and respond. Even some chimpanzees learn to create their own unique signals. A "woo" is unmistakably a response to a threat, but panted grunts are typically submissive greetings. A chimpanzee's grunt almost always denotes the presence of food. And a recent study found that chimpanzees can put these sounds together in different ways to create "sentences" that have varied meanings.
Thus, we can conclude that chimpanzees employ a variety of sound combinations, such as grunts, pants, and hoots, to communicate.
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which steps of the greenhouse effect are most affected by the increases in greenhouse gases, leading to increase in heat?
Answers
Answer: Greenhouse gases arise naturally, and are part of the make-up of our atmosphere. Earth is sometimes called the “Goldilocks” planet – it’s not too hot, not too cold, and the conditions are just right to allow life, including us, to flourish. Part of what makes Earth so amenable is the naturally-arising greenhouse effect, which keeps the planet at a friendly 15 °C (59 °F) on average. But in the last century or so, humans have been interfering with the energy balance of the planet, mainly through the burning of fossil fuels that give off additional carbon dioxide into the air. The level of carbon dioxide in Earth’s atmosphere has been rising consistently for decades and traps extra heat near the surface of the Earth, causing temperatures to rise.
Explanation:
A circuit consists of a wire, a lightbulb, a switch, and a battery. What would happen if the battery were replaced with a section of wire?
Answers
Type the correct answer in the box. Spell all words correctly. What connects neurons and what chemicals help neurons communicate? the connects the axon of one neuron with the dendrite of another neuron to relay messages. Neurons transmit information to each other through synaptic gaps. The cells release chemicals known as into the synaptic gaps to communicate with one another.
Answers
The synapse connects the axon of one neuron with the dendrite of another neuron to relay messages.
The cells release chemicals known as neurotransmitters into the synaptic gaps to communicate with one another.
Synapse can simply be called the point of contact between two neurons through which information is passed on. A synapse is composed of: a presynaptic neuron, synaptic cleft, and a postsynaptic neuron.
Neurotransmitters are the signaling agents that carry information in chemical form from one neuron to another. These neurotransmitters are produced inside the nerve cells itself. The example of neurotransmitters are: acetylcholine, dopamine, glutamate, histamine, norepinephrine, etc.
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Hey guys facing a bit of difficulties on these 5 questions, could someone help? That'd be appreciated thanks.
Answers
Answer:
accumulation is the answer
Describe the effect of increasing carbon dioxide concentration on the rate of photosynthesis at low light intensity
Answers
Explanation:
photosynthesis will slow down, at low intensity of light.
Which of the following steps happens first during transcription?
A. RNA polymerase reaches the end of the gene.
B. RNA polymerase reaches the beginning of a gene.
C. RNA polymerase pulls apart the double helix.
D. RNA polymerase produces mRNA from DNA.
Answers
The correct option for the given question about Genetic transcription is Option B) RNA polymerase reaches the beginning of a gene.
What is Genetic Transcription?It is one among the initial steps in the expression of genes. The transport of genetic information from DNA to proteins occurs sequentially through the processes of transcription and translation. During transcription, just one strand of DNA known as the template strand is replicated, and the resulting RNA is referred to as messenger mRNA.Transcription's primary goal is to create an RNA copy from a DNA sequence. The data required to encode a protein is carried by the RNA transcript.RNA polymerase is the key enzyme responsible for Genetic transcription.It creates a complementary RNA strand from single strand DNA.
Thus we conclude that during the first step of genetic transcription RNA polymerase reaches the beginning of a gene.
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Answer: B <3
Explanation:
The genetic code is based on sequences of three bases called .
A. protons
B. Codons
C. DNA
Answers
Answer:
A. protons
Explanation:
Learn how groups of three nucleotides, called codons, specify amino acids (as ... In transcription, the DNA sequence of a gene is "rewritten" using RNA ...
Missing: protons | Must include: protons
Arrange the following in order from largest to smallest, assuming that they all come from the same fungus. A. mycelium, gill, basidiocarp, basidium, basidiospore B. gill, basidiocarp, mycelium, basidium, basidiospore C. gill, basidiocarp, basidiospore, basidium, mycelium D. mycelium, basidiocarp, gill, basidium, basidiospore
Answers
Option (D) mycelium, basidiocarp, gill, basidium, basidiospore is correct.
The arrangement in order from largest to smallest is :
Mycelium, basidiocarp, gill, basidium, basidiospore.
What is mycelium? A fungus's mycelium, which resembles a root and is made up of a mass of branching, thread-like hyphae. Mycelium-based fungi can be found in and on soil as well as many other substrates.Similar to producing mushroom fruitbodies, different mushroom species require varying incubation times for cultivating mycelium. The growth of mushroom mycelium takes two weeks to two months.Mycelia are essential to the health of the soil. They decompose organic matter, releasing its constituent parts back into the ecosystem for use. In addition, 92% of plant families engage in interactions with fungi. Mycorrhiza is the name for this type of symbiosis.Learn more about Mycelium here:
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describe how the structure of trna molecules enables their function. include the anticodon and the amino acid attachment in your answer.
Answers
The structure of tRNA molecules enables their function through its acceptor stem and T-shaped structure containing the anticodon, the unique L-shaped structure of tRNA enables it to bind particular amino acids, ribosomes, and mRNA.
Because they deliver certain amino acids to the ribosome during translation, tRNA (transfer RNA) molecules are crucial for protein synthesis. Because of its distinctive and highly specialized structure, tRNA is able to carry out its role successfully.
The aminoacyl site, located at one end of the tRNA molecule, is a specialized binding location for a particular amino acid. (A-site). The specified amino acid attaches to the tRNA molecule at this location, creating an aminoacyl-tRNA complex.
The anticodon, a three-nucleotide sequence on the opposite end of the tRNA molecule, is complementary to a particular three-nucleotide sequence on the mRNA (messenger RNA) molecule. The anticodon and codon on the mRNA couple in a complementary manner to guarantee that the proper amino acid is delivered to the ribosome during protein synthesis.
The tRNA molecule has a distinctive L-shaped structure, with an acceptor stem at one end that binds the amino acid and a T-shaped structure at the other end that contains the anticodon sequence. The anticodon is located at the bottom of the T-shaped structure, where it can base pair with the corresponding codon on the mRNA.
The structure of the tRNA molecule allows it to bind to the specific amino acid at one end, and to the ribosome and mRNA at the other end, ensuring the correct amino acid is added to the growing polypeptide chain.
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Which statement best describes a difference between mitosis and meiosis in humans?
A.
Mitosis only occurs in the presence of oxygen, while meiosis can occur in the absence of oxygen.
B.
Cells produced by meiosis are genetically identical, and cells produced by mitosis are genetically unique.
C.
Mitosis is primarily used to create body cells, and meiosis is primarily used to create sex cells.
D.
Cells produced by mitosis possess half the genetic material of cells produced by meiosis.
Answers
Answer: Hello!
Option C Mitosis is primarily used to create body cells, and meiosis is primarily used to create sex cells.
Explanation:
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True or false Bands of magnetic material in the sea floor that have opposite poles, or exhibit magnetic reversal, can provide evidence for sea floor spreading
Answers
Answer:
yes
Explanation:
these poles can provide evidence for sea floor spreading.
Use the names of respiratory diseases to fill in the blanks.
Answers
Answer:
Explanation:
the picture is not clear
nonvascular plants are generally low to the ground because they __________.
a. Cannot transport nutrients
b. Unable to transfer water
c. Unable to produced spores
d. Cannot transport bryophyta
Answers
Nonvascular plants are generally low to the ground because they b. Unable to transfer water
Nonvascular plants, also known as bryophytes, are generally low to the Ground for several reasons, one of which is their inability to transfer water very far.
Nonvascular plants, such as mosses, liverworts, and hornworts, lack a Specialized system for transporting water and nutrients throughout their Bodies. Instead, they rely on simple diffusion to move water and Nutrients from cell to cell.
This means that they need to stay close to the ground where they can Absorb water and nutrients directly from the soil or other moist surfaces.
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