During atrial systole, the AV valves are ________ and the semilunar valves are ________.
A. open; closed
B. closed; closed
C. open; open
D. closed; open
Answer: A
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Which of the following hormons is NOT correctly paired with its function?
a. GIP and stimulation of insulin release b. CCK and stimulating release of pancreatic enzymes c. secretin and stimulation of NaHCO3- d. gastrin and stimulation of ileal motility e. ghrelin and stimulation of the release of growth hormone from the posterior pituitary
The nervous system has two subdivisions-the central nervous system and the ________ nervous system.
Fill in the blank(s) with the appropriate word(s).
Over 90% of the body is composed of four elements: carbon, nitrogen, chlorine, and hydrogen.
Answer the following statement true (T) or false (F)
The most abundant molecules in the plasma membrane are ________
A) phospholipids B) proteins C) glycolipids D) cholesterol molecules E) prostaglandins