Exchanges between blood and tissue cells occur in capillary beds
Indicate whether the statement is true or false
TRUE
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Which hormone functions to counteract the effect of gastric acid in the small intestine?
a) Pepsin b) Secretin c) Gastrin d) Cholecystokinin e) Amylase
A non-mechanistic explanation of why a person sweats is to cool off
Indicate whether the statement is true or false
Select the correct statement about veins
a. Their walls are highly muscular. b. Their walls consist of one layer of cells. c. There are only about 40 large ones in the body. d. They serve as a blood reservoir. e. They transport blood away from the heart.
Which of the following statements regarding hearing is TRUE?
A. The pitch of sounds is conveyed by the amplitude of the vibration of the oval window. B. Low-pitched tones selectively cause vibration of the basilar membrane at a point closer to the oval window than high-pitched tones do. C. Sound is amplified as it is conducted from the oval window to the tympanic membrane. D. The loudness of a sound is conveyed by the frequency of action potentials generated in the cochlear nerve.