The spinal nerves that give rise to the sacral plexus are
A. T11-Co1.
B. S4-C2.
C. L2-S1.
D. L4-S4.
Answer: D
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Which statement is NOT correct?
A. high oxygenated blood returns from the lungs to the heart through the pulmonary veins B. high oxygenated blood leaves the heart and goes to the body through the aorta C. low oxygenated blood returns from the body to the heart through the vena cavae D. low oxygenated blood leaves the lungs and goes to the heart through the pulmonary arteries
Put the following steps of stomach acid production in the correct order starting with the reaction that requires an enzyme. 1. Carbonic acid dissociates. 2. Chloride ion combines with H+ in the gastric lumen. 3. Water and CO2 combine to form carbonic acid. 4. H+ and bicarbonate ion are transported into the gastric lumen. 5. Cl- diffuses into the gastric lumen
A) 3, 1, 2, 5, 4 B) 1, 3, 5, 2, 4 C) 4, 5, 3, 1, 2 D) 4, 5, 1, 2, 3 E) 3, 1, 4, 5, 2
Name the three major interacting hormonal events associated with the onset of puberty
A) Increased GnRH production, increased LH and decreased FSH production, activation of ovaries and testes by LH. B) Decreased GnRH production due to estrogen and testosterone negative feedback, decrease in LH and FSH release by the anterior pituitary gland, and decreased LH and FSH sensitivity by the ovaries and testes. C) Increased GnRH production, increased sensitivity of the anterior pituitary to GnRH and the subsequent release of LH and FSH, and increased sensitivity of ovaries and testes to LH and FSH. D) Increased hypothalamic LH production, anterior pituitary release of estrogen and testosterone, estrogen activation of ovaries and testosterone activation of testes. E) Increased hypothalamic estrogen and testosterone production, estrogen activation of ovaries and testosterone activation of testes.
Molecules bind to receptor sites and are enclosed in vesicles in the process of
A) receptor-mediated endocytosis. B) pinocytosis. C) exocytosis. D) phagocytosis.