A woman with Rh- blood does not have anti-Rh antibodies in her blood unless ________.
A. she has had a previous blood transfusion
B. Rh+ erythrocytes have previously been introduced into her blood
C. her husband is Rh+
D. she has had an Rh+ child
Answer: B
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In one kind of second-messenger system,
a. a small amount of one hormone (second messenger) is required to release another b. a tropic hormone (first messenger) stimulates secretion of another hormone (the second messenger) c. the hormone binds to a specific surface receptor, whereupon the hormone-receptor complex moves into the cell to combine with an intracellular receptor d. releasing hormones (first messenger) from the hypothalamus regulate anterior pituitary hormones (second messengers) e. a hormone (first messenger) binds to surface receptors that activate adenylate cyclase, which then catalyzes cAMP formation
The most numerous of the white blood cells are the ________
A) lymphocytes B) neutrophils C) eosinophils D) monocytes E) basophils
In the proximal convoluted tubule the reabsorption of Na+ is unaffected by the presence or absence of other substances such as glucose or H+ in the filtrate
Indicate whether the statement is true or false.
________ produce the ground substance and protein fibers in connective tissues.
A. Fibroblasts B. Reticular cells C. Goblet cells D. Adipocytes