The plasma membrane of a neuron is more permeable to potassium ions because
A. of its positive electrical charge.
B. there are more leak ion channels for K+ than Na+.
C. protein molecules cannot exit through the cell membrane.
D. calcium ions block Na+ and Cl- channels.
E. there are more leak ion channels for Na+ than K+.
B
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Inadequate exposure to sunlight could result in decreased amounts of vitamin ________ in the body
A) A B) B12 C) C D) D E) E
A falling blood pH and a rising partial pressure of carbon dioxide due to pneumonia or emphysema indicates ________
A) metabolic acidosis B) respiratory alkalosis C) metabolic alkalosis D) respiratory acidosis
Which of the following nerves is the most superior?
a. ilioinguinal b. iliohypogastric c. phrenic d. pudendal
The term "flagellum" is appropriate for the structure it represents because it means
A. a nut or kernel. B. an eyelid. C. a whip. D. the center. E. a bench.