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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.
What affects nerve impulse speed?
Nerve impulse speed is affected by the diameter of the nerve fiber (larger fibers conduct faster), the presence of myelin sheath (myelinated fibers conduct faster), and temperature (warmer temperatures enhance conduction speed). Additionally, the refractory period of the neuron and the strength of the stimulus can also influence nerve impulse speed.
