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What minerals are needed for muscle contraction and conduction of nerve impulses?
Minerals such as calcium, magnesium, sodium, and potassium are essential for muscle contraction and nerve impulse conduction. Calcium is particularly important for initiating muscle contractions and transmitting nerve impulses, while magnesium, sodium, and potassium help regulate muscle relaxation and contraction as well as nerve impulse transmission.
Is the velocity of a nerve impulse greater than electrical conduction's?
yes
The velocity of nerve impulse conduction is greatest in?
Heavily myelinated, large diameter fibers
When the nerve impulse hops from node to node to the axon terminal?
This is called saltatory conduction.
What is a way of conduction?
This means that the flow of a nerve impulse will travel only in one direction.
What is the myelin sheath's function?
The function of the myelin sheath is to insulate the axon of the neuron. When there are gaps in the sheath, known as nodes of Ranvier, the nerve impulse can jump from gap to gap, thus increasing greatly the speed of conduction of the nerve impulse. This is known as saltatory conduction.
What the function of the myelin sheath?
The function of the myelin sheath is to insulate the axon of the neuron. When there are gaps in the sheath, known as nodes of Ranvier, the nerve impulse can jump from gap to gap, thus increasing greatly the speed of conduction of the nerve impulse. This is known as saltatory conduction.
What is demyelinating processes?
Demyelination is the process that erodes the sheath that normally protects nerve cells. This causes a reduction in the nerve impulse conduction. One of the diseases that causes this is multiple sclerosis.
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.
What happens for the perception of sensation to take place?
stimulus present, receptor activated, nerve impulse conduction
What part of a nerve cell carries impulses toward the cell body?
There is one way conduction of impulse into the neuron, from dendrites to nerve body to axon.
How does a lower body temperature lead to slower nerve impulse conduction?
Lower body temperature can slow down nerve impulse conduction because it affects the speed of ion movement across neuronal membranes. Nerve impulses rely on the rapid exchange of sodium and potassium ions, which is facilitated by temperature-dependent processes. When temperatures drop, the biochemical reactions involved in these ionic movements slow down, leading to a decrease in the rate of action potential generation and propagation along the nerve fibers. Consequently, this results in slower overall nerve signal transmission.
