A countercurrent mechanism is in
A. the afferent and efferent arterioles.
B. the glomerulus and Bowman's capsule.
C. the proximal and distal convoluted tubules.
D. the loop of Henle only.
E. both the loop of Henle and the vasa recta.
E
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Exposed collagen in a damaged vessel
a. activates factor XII to initiate blood clotting b. initiates platelet aggregation c. secretes ADP, which causes platelets to become sticky d. causes a and b e. causes a and c
Which of the following is not a function of skeletal muscle?
A) produce movement B) maintain posture C) maintain body temperature D) all of the above are functions of the skeletal muscle E) A and B only
Oversecretion of aldosterone causes ________.
A. increased urine volume B. hypernatremia C. hypercalcemia D. hyponatremia E. hyperkalemia