Q: What happens to conduction through axons that have lost their myelin
A: Myelin sheath is an insulating covering in the neuron over the axon. The myelin is formed in the…
Q: Myelinated axons: Are able to transmit signals faster than unmyelinated axons Are relatively rare…
A:
Q: How does myelination differ between the CNS and the PNS?
A: Nervous system involves a series of networks of sensory receptors that provides information about…
Q: Name the neurotransmitter that conducts nerve impulse through synapse.
A: Neurotransmitters are signalling molecules that act on receptors of postsynaptic neurons. Neurons…
Q: Does mylination or axon diameter have a greater effect on speed of an impulse?
A: Introduction Complex organisms such as Multicellular organisms needs control and coordination…
Q: Unmyelinated axons are found in both gray and white matter.
A: ANSWER) Gray matter mainly consists of unmyelinated axons whereas the areas of white matter only…
Q: Describe how the speed of nerve signal conduction varies with axon diameter and the presence or…
A: Neurons send information and instructions throughout the brain and body. The information is sent via…
Q: How would severing an axon affect the flow of information in a neuron?
A: It sends signals to the surrounding tissue to be 'cleaned up' when an axon is destroyed by a laser,…
Q: What two types of macromolecules are the main components of myelin? a. carbohydrates and lipids b.…
A: The nervous system is made up of two main types of cells - neurons and the neuroglia. Neurons are…
Q: Name the major parts of an axon.
A: A long, slender projection of a neuron or a nerve cell is referred to as an axon. It is involved in…
Q: Why is it important that different body structures have differentdensities of nerve innervation?
A: The palmar skin of the palms and the periorbital area of the face are by far the most highly…
Q: What happens at the nodes of Ranvier in a myelinated axon?
A: Introduction: Myelinated axons have microscopic gaps within them called nodes of Ranvier. These gaps…
Q: How do Schwann cells and oligodendrocytes differ with respect to the number of axons they myelinate?
A: There are two types of myelinating cells present in our nervous system: Schwann cells also known as…
Q: What are axoaxonal synapses?
A: Axoaxonal synapse is a synapse between two nerve cells in which the nerve impulse travels from one…
Q: They first measure the resting potential of the axon. How would you expect the new resting potential…
A: the new resting potential in compare to the normal resting potential of the axon results :
Q: Explain the structure of the axon.
A: Neurons or nerve cells are the basic structural and functional unit of the brain. Brain tissue…
Q: Since all APs generated by a given nerve fiber have the same magnitude, how does the CNS “know”…
A: The generation of an action potential is an " all or none phenomenon". An action potential will only…
Q: How do proteins and other chemicals synthesized in the soma get to the axon terminals? By what…
A: Each neuron consists of a cell body called Cyton and it has numerous branches called nerve fibers…
Q: Explain why a nerve impulse travels more quicklydown a myelinated axon than down an…
A: Neurons are electrically excitable cells and these communicate with other cells through specialized…
Q: Areas of myelinated axons create the appearance of _______ matter, while neuron cell bodies and…
A:
Q: Gray matter consists of... cell bodies, dendrites, and unmyelinated axons myelinated axons…
A: The central nervous system is composed of the brain and spinal cord, and the peripheral nervous…
Q: Are axons more likely to regrow in the peripheral nervous system or the central nervous system? Why?
A: CNS stands for Central nervous system. Here, the axons do not have the ability to spontaneously…
Q: If the middle of an axon were depolarized to threshold, in which direction could the action…
A: Neurons are the basic unit of the nervous system. They are involved in the transmission of nerve…
Q: What area represents the axon hillock? В NEURON K NEURON L E D A G LABEL C LABEL G LABEL H LABEL B
A: Neurons are the fundamental units of the nervous system and consist of a cell body, axon and…
Q: A damaged axon in the PNS may be able to regenerate only if the cell body is intact. why do you…
A: A neuron comprises many dendrites and each of them has one axon, which is also known as the nerve…
Q: what happens to the conduction velocity of an axon that is isometrically twice as big as another…
A: Axons can emanate from dendrites known as axon-carrying dendrites in some animals. No neuron ever…
Q: In a nerve at rest, the low potassium ion concentration inside the axon is responsible for a…
A: At rest the membrane potential of the neuron is about -70 mv. This is called as resting membrane…
Q: What is known as axon terminal ?
A: Biology terms are fundamental concepts and terms used in biology, which is the study of life and…
Q: Name a neurotransmitter stored at the terminal end of the axon.
A: The nervous system of an organism is quite complex network that is responsible for coordinating…
Q: How does conduction along a myelinated fiber differ from conduction along an un-myelinated fiber?
A: Myelin is a substance which is rich in lipids and surrounds the nerve cell axons in order to…
Q: Why do we call the nervous system a "signal system?" Can you compare it to anything else?
A: Cells make up the building blocks of the living organism. A group of cells makes tissues which in…
Q: If an axon receives two stimuli close together in time, only one AP occurs. Why?
A: An action potential is the electrical form of messages transmitted across the body via the nervous…
Q: What is the function of the axon? to receive information and information into the cell body to store…
A: The neuron is the functional unit of the nervous system. The neurons send and receive signals from…
Q: To which part or parts of a neuron does the all-or-none law apply? a. Axons b. Dendrites c. Both…
A: Neurons are the basic unit of the nervous system. They are involved in the generation and…
Q: State the function and location of axon.
A: Nervous tissue is a major class of tissues that plays an essential role in building up the central…
Q: Explain how the nerve impulse is transmitted across a synapse.
A: A neuron comprises dendrites, cell body, axon, myelin sheath, and axon terminals. The place where…
Q: What is the difference in appearance and function between dendrites and axons??
A: Neurons are specialized cells that transmit and receive electrical signals in the body. Each neuron…
Q: In myelinated axons where are the most Na+ channels found?
A: Axon is the largest part of the neuron measuring up to 1meter in length. They carry the nerve…
Q: Distinguish between saltatory nerve signal conduction in myelinated axons versus unmyelinated
A: Saltatory conduction is a form of nerve impulse conduction in which the action potentials are…
Q: Myelinated axons are known to speed up the nerve impulse transmission. How does this happen
A:
Q: Certain types of neurotoxins prevent depolarization of the axon. What specific type of channel is…
A: The depolarization and repolarization of membrane potential is known as an action potential or nerve…
Q: How is action potential propagated along the axons?
A: When a neuron's axon wants to send information along the body, it generates an action potential. It…
Q: How does myelin aid propagation of an action potential along an axon? How do the nodes of Ranvier…
A: Action potential refers to a change in the membrane potential of the nerve cells by opening and…
Q: What is the name of theterminal portion of the axon?
A: Neurons are specialized cells that transmit and receive electrical signals in the body. Each neuron…
Why are impulses transmitted more quickly down a myelinated axon than down an unmyelinated axon?
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- Many neurons have only a single axon, but many terminals at the end of the axon. How does this end structure of the axon support its function?. Myelinated axons are known to speed up the nerve impulse transmission. How does this happen?what happens to the conduction velocity of an axon that is isometrically twice as big as another axon ?
- What happens to conduction through axons that have lost their myelin?Describe how following a threshold stimulus, a action potential is carried along an unmyelinated axon? How does this differ from an action potential passing through a mylenated axon?Areas of myelinated axons create the appearance of _______ matter, while neuron cell bodies and unmyelinated axons create the appearance of ______ matter.