Peristalsis
A. is under voluntary control.
B. involves the opening and closing of muscular sphincters.
C. involves back-and-forth movement for mixing.
D. is the alternating contraction of muscle layers in the GI tract wall that propels materials through the tract.
E. All of the choices are correct.
D
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Calcium-induced calcium release occurs when
A. calcium from the sarcoplasmic reticulum stimulates the movement of calcium into the cell through the plasma membrane. B. calcium is released from both the sarcoplasmic reticulum and the cardiac muscle cell. C. the eflux of calcium from the cell results in depolarization. D. calcium entering through the plasma membrane stimulates release of calcium from the sarcoplasmic reticulum.
Gastrin causes
A) inhibition of HCl secretion. B) increases in the secretion of chief cells and parietal cells. C) the conversion of pepsin into pepsinogen. D) the upper esophageal sphincter to open. E) the pyloric sphincter to alternately open and close.
The large commissure that connects the right and left sides of the brain is called the ________
A) corona radiata B) internal capsule C) corpus callosum D) longitudinal fissure
Which term means lying on the abdomen, face downward?
A. Proximal B. Prone C. Medial D. Posterior E. Supine