Cancer cells and virus-infected body cells can be killed before activation of adaptive immunity by ________
A) B lymphocytes
B) T lymphocytes
C) pinocytosis
D) natural killer cells
D
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Preganglionic fibers from the sacral segments of the spinal cord form the ________ nerve(s)
A) pelvic B) splanchnic C) celiac D) sympathetic E) mesenteric
Which of the following components of bone provides it with flexibility?
A. water B. calcium carbonate C. calcium phosphate D. collagen
Match the change in gas composition with the response (disregard weak responses).
1. Arterioles: systemic constrict, pulmonary dilate. 2. Bronchioles and systemic arterioles dilate. 3. Arterioles: systemic dilate, pulmonary constrict. 4. Bronchioles and systemic arterioles constrict. A. PO2 increases. B. PCO2 increases. C. PO2 decreases. D. PCO2 decreases.
Match the pathological condition with its cause.A. Decreased amounts of thyroid hormoneB. Increased amounts of thyroid hormoneC. Abnormally low levels of aldosterone and cortisolD. Increased levels of growth hormone in adultsE. Lack of ADHCretinism
Fill in the blank(s) with the appropriate word(s).