Movement of hair cells in the semicircular canals signals
A) the frequency of the sound. B) sound waves to the brain.
C) the velocity of the movement. D) the direction of motion.
D
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The abnormal condition of air in the pleural cavity is known as:
a. pleurisy b. lung cancer c. pneumothorax d. pulmonary edema e. congestive failure
Repeated firings of one presynaptic neuron can produce ____________________ summation
Fill in the blank(s) with correct word
Lymph nodes
are sacs filled with lymph. return excess interstitial fluid to the bloodstream. filter and cleanse lymph. are pumps that keep lymph flowing through lymphatic vessels
Control of melatonin secretion from the pineal gland requires ________.
A. sunlight or lack of sunlight B. sympathetic stimulation from the suprachiasmatic nucleus of the hypothalamus C. activation of melanopsin from ganglion cells of the retina D. All of the choices are correct.