A nerve cell membrane becomes depolarized as a result of
A. Na+ ion channels being opened and Na+ ions diffusing into the cell.
B. the relative ease with which K+ diffuses into the nerve cell.
C. Ca+2 leaving the nerve cell.
D. Na+ being prevented from passing through the membrane.
Answer: A
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Indicate whether the statement is true or false
Nerve cells in the central nervous system are primarily
A. Interneurons. B. Sensory neurons. C. Glia. D. Motor neurons.
Hyp/o- means "above normal."
Answer the following statement true (T) or false (F)
Which of the following is true regarding an epidural block?
A) It is commonly used as a method of pain control during labor and delivery. B) It affects only the spinal nerves in the immediate area of the injection. C) It can provide sensory and motor anesthesia, depending on the anesthetic selected. D) It can provide mainly sensory anesthesia, depending on the anesthetic selected. E) all of the above