Most target organ control on the anterior pituitary gland is due to ________.
A. positive feedback effect
B. positive feedback inhibition
C. negative feedback inhibition
D. negative feedback
Answer: C
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Which structures pull on the tendinous cords (chordae tendinae) and hold them taut during ventricular contraction?
A. Papillary muscles B. Pectinate muscles C. Trabeculae carneae D. Coronary ropes E. Fibers in the atrioventricular bundle
Which of the following is incorrect pertaining to a mesentery?
A) It is sensitive to laceration near its attachment to organs. B) It is a double-layer of peritoneum. C) It transmits nerves and blood vessels to organs from the body wall. D) It constitutes a region of continuity between visceral and parietal peritoneum. E) It contains lymph nodes and vessels.
Increased blood calcium levels result in increased
A) secretion of calcitonin. B) osteoclast activity. C) secretion of parathyroid hormone. D) retention of calcium by the kidneys. E) excitability of neural membranes.
As the filtrate passes through the rest of the nephron, tubular reabsorption and tubular secretion convert it to:
A) salt. B) water. C) urine. D) glucose.