Which division of the ANS is responsible for the physiological changes you experience when startled by a loud noise?
A) enteric division of the ANS
B) sympathetic division of the ANS
C) parasympathetic division of the ANS
D) central division of the ANS
E) effector division of the ANS
Answer: B
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Which of the following is an example of a kinetic consideration?
A. muscle force producing a vertical jump B. impact force landing from a jump C. both A and B D. neither A nor B
The group of pacemaker cells near the entrance of the superior vena cava forms the ________
A) Bundle of His B) Atrioventricular node C) Sinoatrial node D) Myocardium
Acidosis has what effect on the resting membrane potential of nerve cells?
A) It causes repolarization. B) It causes hyperpolarization. C) It causes depolarization below threshold. D) It causes depolarization above threshold.
All of the following are true of the intestinal phase of gastric digestion except that it
A) precedes the gastric phase. B) functions to control the rate of gastric emptying. C) involves both neural and endocrine reflexes. D) helps ensure that the functions of the small intestine proceed with relative efficiency. E) begins when chyme enters the small intestine.