One reason for the resting membrane potential (between -70mV and -90mV) is that
A) there are extra Na+ ions outside the plasma membrane, and extra Cl- ions inside the plasma membrane.
B) Na+ ions diffuse down their concentration gradient to the outside of the cell.
C) K+ ions diffuse down their concentration gradient to the outside the cell.
D) large protein ions diffuse to immediately outside the plasma membrane.
E) fewer Ca2+ ions inside the plasma membrane make the inside more negative.
Answer: C) K+ ions diffuse down their concentration gradient to the outside the cell.
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If the parent cells in meiosis have 60 chromosomes, how many cells will the daughter cells have?
A) 30 B) 60 C) 120 D) 20
Excessive ____________________ may lead to dehydration and electrolyte imbalance
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Specific prevertebral ganglia are named after the
A. distance from the corresponding parasympathetic ganglion. B. early anatomist who discovered and described them. C. major abdominal arteries around which they are found. D. effector organ stimulated by the postganglionic axon. E. vertebra from under which the preganglionic axon travels.
Which stimulates vasopressin secretion?
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