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Why is conduction of nerve impulse through nerve fibers described as electrochemical phenomenon?
The conduction of nerve impulses through nerve fibers is described as an electrochemical phenomenon because it involves the movement of ions across the neuronal membrane, leading to changes in electrical potential. When a nerve is stimulated, sodium ions rush into the cell, causing depolarization, followed by the outflow of potassium ions to restore resting potential. This rapid exchange of ions creates an action potential that propagates along the nerve fiber. The interplay of electrical signals and chemical ion gradients underlies the transmission of information in the nervous system.
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When the receptor have registered a the energy is converted to a electrochemical impulse?
Yes, when a receptor detects a stimulus, it triggers an electrochemical impulse to be sent along a nerve cell. This impulse travels to the brain where it is interpreted as a specific sensation or perception.
What is the difference between impulse conduction and transmission?
Impulse conduction refers to passage of impulse within the same cell. Where as transmission as the name implies, is concerned about passage of impulses either chemical or electrical from one cell to another.
Is the term for a delay or interruption in conduction of the electrical impulse in the myocardium?
The term for a delay or interruption in conduction of the electrical impulse in the myocardium is "heart block." Heart blocks can range from first-degree (mildest) to third-degree (most severe) based on the extent of conduction disruption in the heart's electrical system.
What is the impulse conduction through a reflex arc?
nociceptors and mechanoreceptors (respond to touch, temp and pain)
What is the membrane of a nerve cell is comprised of?
Its main function is to propagate the action potential (the 'impulse') along the length of the axon.
When the receptor have registered a the energy is converted to a electrochemical impulse?
Yes, when a receptor detects a stimulus, it triggers an electrochemical impulse to be sent along a nerve cell. This impulse travels to the brain where it is interpreted as a specific sensation or perception.
What is impulse conduction?
Party of nervous
What kind of neurons does impulse conduction occur in the fastest?
nig
What is the difference between impulse conduction and transmission?
Impulse conduction refers to passage of impulse within the same cell. Where as transmission as the name implies, is concerned about passage of impulses either chemical or electrical from one cell to another.
What features of nerves improve impulse conduction velocity?
myelin sheaths
Is the velocity of a nerve impulse greater than electrical conduction's?
yes
When current leaps across an insulating myelin sheath from node to node the type of impulse conduction is called what?
Saltatory Conduction
What is the point in the intrinsic conduction system where the impulse is temporarily delayed?
Av node
Can the depressant effect of alcohol interfere with the conduction of the electrical impulse of the heartbeat?
false
Is the term for a delay or interruption in conduction of the electrical impulse in the myocardium?
The term for a delay or interruption in conduction of the electrical impulse in the myocardium is "heart block." Heart blocks can range from first-degree (mildest) to third-degree (most severe) based on the extent of conduction disruption in the heart's electrical system.
What critical role does the nodal system play in heart physiology?
Normal impulse conduction
The velocity of nerve impulse conduction is greatest in?
Heavily myelinated, large diameter fibers
