In addition to the concentration gradient, what else affects the movement of ions across plasma membranes?
a. electrical charge
b. molecular weight
c. vibration
d. spin
e. number of atoms
a
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Which nerve carries more than 90% of the parasympathetic fibers?
A. Glossopharyngeal B. Phrenic C. Pelvic splanchnic D. Vagus E. Facial
Compared to a young adult, an older individual has ________ skin.
A. thicker B. thinner
What structure receives blood from the venae cavae?
A) Right ventricle B) Left atrium C) Left ventricle D) Right atrium
Which of the following is NOT true of corticospinal fibers?
A. They may synapse directly on alpha motor neurons. B. They may synapse directly on gamma motor neurons. C. They may synapse directly on interneurons. D. They are collectively sometimes called the extrapyramidal system. E. They may synapse with afferent neurons in ascending pathways.