How does conduction along a myelinated fiber differ from conduction along an un-myelinated fiber?

Q: What is action and resting potential and how does it work in conducting electrical impulses?

A: Neurons are the functional units of the nervous system that transmit stimuli. The structure of a…

Q: What are Refractory Periods?

A: BASIC INFORMATION  NEURON   It is the longest cell inside the human body  It is found in the brain…

Q: What is the role of the relative refractory period?

A: Introduction Nerves play vital role in conduction of signals from CNS to various other organs, nerve…

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: Why are impulses transmitted more quickly down a myelinated axon than down an unmyelinated axon?

A: A neuron with myelin sheath can conduct impulse faster than the neurons which are without the myelin…

Q: Unmyelinated axons conduct action potentials without decrement, but when myelinated axons lose…

A: The nervous system is one of the vital systems of a body. It is a system of nerves which carry…

Q: What is myelin? How does myelination differ in the CNS and PNS

A: The sensory system is the piece of a creature's body that organizes its conduct and communicates…

Q: Where does saltatory conduction occur? Select one: a. From node to node in unmyelinated fibers b.…

A: saltatory conduction in normal term means propagation/movement of action potential from one node of…

Q: What is the function of themyelin sheath? Do all axonspresent a myelin sheath?

A: The insulating covering around the nerve cell is termed as the myelin sheath. The myelin sheath is…

Q: Why do Schwann cells insulate nerves?

A: Answer : researches have proven that Schwann cells in the peripheral frightened device ordinarily…

Q: Describe the myelin sheath that is formed around certain nerve fibers?

A: Neurons or nerve cells are the fundamental units of the nervous system. The function of these cells…

Q: Why is Myelin made up of Lipids and protein macromolecules?

A: Myelin is a sheath-like substance that surrounds nerve fibres, insulating & protecting them.…

Q: What is the conduction velocity of the action potentil in a myelinated axon of the nerve cell?

A: The conduction velocity is the speed in which electrochemical impulse propagates down a neural…

Q: what is relative refractory?

A: The refractory period refers to the specific time interval when the excitable cells (like neurons)…

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 is absolute refractory period?

A:

Q: What is the difference of depolarization and hyperpolarization? Why do cold receptors depolarize…

A: both are the phases in the generation and conduction of an action potential.

Q: Suppose researchers find that axon A can produce up to 1,000 action potentials per second (at least…

A: The nervous system of an organism is quite complex network that is responsible for coordinating…

Q: What is relative refractory period?

A: Refractory period – duration of time during which the cell is unable to respond to a stimulus. It…

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: When do EPSPs and IPSPs occur?

A: EPSP  :- Cause Membrane Potential to move closer to threshold. Caused by an opening of Cation…

Q: What is the functional advantage of myelination?

A: The neuron or nerve cell is the fundamental unit of the nervous system. This is divided into three…

Q: What is the function of myelin sheaths? Where are they found?

A: The nervous system is the network of neurons and nerve fibers that functions to transmit nerve…

Q: How does the resting membrane potential of a neuron develop?

A:

Q: What are some diseasescharacterized by progressiveloss of the axonal myelinsheath?

A: An abnormal condition which affects the structure or function of a part or whole body organism…

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: What is the exact location of reticular fibres?

A: Reticular cell (fibroblast) synthesizes collagen alpha-1(III) which are used for the production of…

Q: Explain the physiological basis of the absolute and relative refractory periods?

A: The absolute refractory period can be defined as the period during which another action potential…

Q: How are Depolarization and graded potential caused?

A: Depolarization is also known as Hypopolarization. Depolarization results in a change in the electric…

Q: Why can a greater-than-normal stimulus trigger an AP during the relative refractory period but not…

A: Our brain sends and receives information in the form of electrical signals. These electrical signals…

Q: How do oligodendrocytes myelinate axons and how does this differ from myelination by Schwann cells

A: Myelination Myelin is a lipid-rich protective insulating layer present around the nerve cell axons.…

Q: Why are chemically- sensitive gated channels associated with receptors at the synapse and…

A: The potential gradient that helps the movement of the ions is known as Membrane Potential. Membrane…

Q: Once an EPSP is produced in a dendrite, how does it stimulate the production of an action potential…

A: An excitatory postsynaptic potential in short ESEP is a modification in the post-synaptic cell’s…

Q: Explain the cocept of Myelin Sheath ?

A: All organisms are made of billion s of cells. All cells are like the bricks that organise to make up…

Q: When does development of neuronal myelination occur?

A: Developmental biology is the branch of biology which studies how several interrelated mechanisms…

Q: How do you know when an action potential will fire or not on a neuron?

A: Action potential is generated when a neuron is  fired. It means neural membrane allows influx of…

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: What are mirror neurons? And how do they function?

A: The neuron is the basic functional unit of the brain, is a specially designed cell to transmit…

Q: What is Afferent neurons?

A: Neurons are the cells that are the basic units that constitute the brain and the nervous system.…

Q: Which of the neuroglial cell types shown form myelin sheaths within the CNS? OA Ов Ос F

A: Neuroglial cells Neuroglia or glia or glial cells are non-neuronal cells present in brain and spinal…

Q: spinal cord would you find myelinated axons?

A: The spinal cord along with the brain is part of the central nervous system. It has myelinated axons…

Q: What does a nerve impluse flow more rapidly in myelinated nerve fibres than in non-myelinated nerve…

A: The axons of many neurons have a segmented white insulating cover over it. This is called myelin…

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 letter represents dorsal white column b) what letter represents structure that carrys motor…

A: In the given transverse section of the spinal cord  A :  dorsal root ganglion  B : dorsal root…

Q: Compare and contrast the neuroglial cells that form the myelin sheaths in both the CNS and the PNS?

A: Neuroglia or glial cells are the non-neuronal cells present in both the central nervous system (CNS)…

Q: epsp’s and ipsp’s, where are they occurring

A: A transient depolarization of the postsynaptic membrane generated by the passage of positively…