The cardiovascular system ________
A) cleanses the blood of pathogens and other debris
B) promotes growth and development
C) transports blood throughout the body
D) eliminates nitrogenous wastes from the body
Answer: C
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The circuitry of the autonomic system allows for control in activation. The characteristic that allows a small number of preganglionic cells to stimulate a large number of postganglionic cells is
A. convergence. B. reverberation. C. divergence. D. reciprocal innervation.
Damage to the fovea of the eye interferes with the ability to
A) bleach visual pigments. B) focus the image. C) see color. D) regulate the amount of light striking the retina. E) None of the answers are correct.
Proteins in the cell membrane that bind hormones and relay messages into the interior of the cell __________.
A)are known as transmembrane proteins B)provide cell identification C)perform a function known as signal transduction D)are known as carrier proteins
An action potential is ________
A) a depolarization of the cell membrane B) a rapid depolarization and repolarization of the cell membrane that is propagated C) a refractory period of the cell membrane D) a repolarization of the cell membrane