Type B intercalated cells are more active than Type A intercalated cells under normal circumstances, and their activity increases even more during acidosis
a. True
b. False
Indicate whether the statement is true or false
False
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A drug that blocks ATP production is introduced into an isolated axon preparation. The axon is then repeatedly stimulated, and recordings are made of the response. What effects would you expect to observe?
What will be an ideal response?
The fibers that carry the action potentials that cause skeletal muscle to contract are ________.
A. anulospiral endings B. extrafusal fibers C. alpha motor neurons D. intrafusal fibers E. gamma motor neurons
The end of the aorta occurs when the vessel bifurcates into the
A. brachiocephalic artery. B. subclavian arteries. C. common carotid arteries. D. common iliac arteries.
Why are the attachment points of a muscle no longer referred to as an origin or insertion?
A. It was too difficult to memorize them. B. A muscle's origin or insertion changes over a person's lifetime. C. The moving and nonmoving ends of muscle may change with different actions. D. A muscle's origin or insertion can vary in different people.