What is the function of enterokinase secreted by the brush border?
A. Causes the stomach to produce gastrin
B. Activates the protein-digesting enzyme trypsin
C. Breaks down dipeptides
D. Causes release of pancreatic digestive enzymes
Answer: B
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The baroreceptor reflexes affect sodium balance by
a. causing release of renin b. causing the release of vasopressin c. lowering GFR through vasoconstriction of afferent arterioles d. lowering GFR through vasodilation of afferent arterioles e. none of the above
The portion of the brain involved primarily with vision is the
A. insula. B. temporal lobe. C. frontal lobe. D. parietal lobe. E. occipital lobe.
The effect of beta-blocker drugs (block beta-receptors) is to decrease blood pressure
Indicate whether the statement is true or false
Following an injury to his arm, a patient complains that he has no sensations from the thumb, index finger, middle finger, and part of the ring finger. You suspect that he has damaged the
A. median nerve. B. radial nerve. C. musculocutaneous nerve. D. ulnar nerve. E. axillary nerve.