During an action potential, when a nerve cell membrane changes from positive inside to negative inside, the cell membrane is undergoing
A) depolarization.
B) repolarization.
C) tetany.
D) treppe.
Answer: B) repolarization.
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Acetylcholinesterase, monoamine oxidase (MAO), and catechol-O-methyltransferase are
A) neurotransmitters. B) enzymes that break down neurotransmitters. C) enzymes that act as neuromodulators. D) enzymes that could produce an EPSP. E) substances that could produce an IPSP.
Which cavity houses the mediastinum?
A) thoracic B) pelvic C) abdominal D) cranial E) spinal
The glomerular filtrate is almost identical in composition to the plasma
Indicate whether the statement is true or false
A complete spinal cord injury to the upper cervical spine:
A) results in quadriplegia but the patient usually retains his or her ability to breathe spontaneously. B) is not compatible with life and results in immediate death due to cardiopulmonary failure. C) will result in permanent loss of all cord-mediated functions below the level of the injury. D) results in neurologic dysfunction that is considered to be permanent if it lasts longer than 24 hours.