Once they have developed surface receptors for a particular antigen, lymphocytes are said to be what?
A. Capped
B. Self-tolerant
C. Sensitized
D. Immunoefficient
E. Immunocompetent
E. Immunocompetent
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The parathyroid hormone:
a. has the opposite effect of calcitonin b. is made in the thyroid gland c. causes a decrease in blood concentration of calcium d. all of the above
If a pregnant woman becomes infected with the Varicella (chicken pox) virus during the embryonic stage, the fetus can develop eye problems, mental retardation, and delayed growth. The Varicella virus is a(n) ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following would be favorable to bone deposition?
A. Increased kidney reabsorption of calcium B. Intestinal excretion of phosphate C. Increased PTH hormone secretion D. Increased osteoblast inhibition E. Stem cell differentiation into osteoclasts
Which of the following is NOT a common characteristic of an exocrine gland?
a) Initially secretes its products into a duct. b) Secretes materials onto outer surface of the body. c) Secretes materials into the lumen of hollow organs. d) Its secretory products are carried in body fluids to distant target cells. e) All the answer selections describe characteristics of exocrine glands.