The antibody that acts as a receptor on the surface of B cell is ________.
A. IgE
B. IgA
C. IgD
D. IgM
Answer: C
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Which of the following nerves is labeled E in the diagram?
a) phrenic nerve b) ulnar nerve c) intercostal nerve d) femoral nerve e) tibial nerve
As tubular fluid flows through the nephron, fluid from the proximal convoluted tubule flows directly into the
A. distal convoluted tubule. B. nephron loop. C. glomerulus. D. glomerular capsule. E. minor calyx.
The carbonic acid-bicarbonate buffering system:
a. Causes a change in respiratory rate to maintain balance b. Causes the secretion of sodium and chloride from the kidneys c. Is slow to react to changes in pH d. Reacts to changes in blood oxygen concentrations
Menstrual cramps are most commonly caused by
A. increased FSH levels. B. increased estrogen secretion by the ovary. C. increased prostaglandin secretions. D. increased HCG hormone release. E. a decreased inflammatory response in the endometrium.