Most of the circulating antibodies are derived from _____ class immunoglobulin.
A) A
B) E
C) G
D) D
Ans: C) G
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Which of the following does not require energy expenditure?
a. net movement of potassium into the cell. b. net movement of sodium into the cell. c. iodine uptake by thyroid gland cells. d. transport of hydrogen ion into the stomach lumen in association with hydrochloric acid secretion during digestion of a meal e. both (b) and (d) above.
The rectus abdominis is a ________ muscle, while the rectus femoris is a ________ muscle
A) convergent; unipennate B) parallel; bipennate C) multipennate; convergent D) fusiform; parallel E) bipennate; parallel
Fusion of the male and female pronuclei forms the
A. blastocyst. B. morula. C. zygote. D. gastrula. E. trophoblast.
Tubular secretion of foreign substances, such as drugs, generally occurs in the
a. Bowman's capsule b. loop of Henle c. proximal tubule d. collecting duct e. glomerulus