The mechanism of acid secretion by the parietal cells of the stomach involves the actions of the
A) Enzyme pepsid anhydrase.
B) K+/H+ ATPase proton pump.
C) Cl-/H+ exchanger.
D) All of the above
Answer: B
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Myofibrils contain
a) contractile proteins. b) regulatory proteins. c) structural proteins. d) all of these answers are correct. e) none of these answers are correct.
It is important to realize that ringworm is caused by a ____________________________________ that infects skin, hair, nails and claws and has nothing to do with worms!
Fill in the blank(s) with correct word
The pyloric sphincter is located between the
a. esophagus and stomach. b. oral cavity and esophagus. c. large intestine and rectum. d. small intestine and large intestine. e. stomach and small intestine.
The chemosensitive area of the brain is located in the ________.
A. cerebral peduncles B. medulla oblongata C. cerebellum D. hypothalamus E. pons