In order for a severed peripheral nerve to regenerate and recover its original function,
nerve fibers must sprout and enter tubes formed by
A) basement membranes and connective tissues.
B) myelin.
C) nodes of Ranvier.
D) former axons.
A
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Why is there partial relaxation in graph (c)?
A) Calcium ion release is slow.
B) The muscle is starting to fatigue.
C) Stimulation intensity is fluctuating.
D) ATP reserves are cycling.
E) Nerve stimulation frequency is below maximum.
________ is released from type II cells to stimulate primary gustatory neurons.
A) Serotonin B) Glutamine C) Gustducin D) Acetylcholine E) ATP
Myelin is a lipid insulation produced by the ________.
A. microglia B. oligodendrocytes C. astrocytes D. ependymal cells
Ascending sensory information is relayed from one nucleus to another in a series of steps, which permits modulation of the response, but this processing takes time. Why is this delay in response not dangerous to the organism?
What will be an ideal response?