The myogenic mechanism
a. causes the afferent arteriole to constrict when blood pressure is too high
b. may result from stretching of vascular smooth muscle
c. is an autoregulatory mechanism
d. reduces GFR
e. has all of the above characteristics
E
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Osteoclasts are
A) immature bone cells that give rise to osteocytes. B) cells that secrete bone matrix. C) mature bone cells that maintain the matrix. D) cells that break down bone matrix.
Platelets
a. are small cell fragments derived from large megakaryocytes in the bone marrow b. lack nuclei c. contain high concentrations of actin and myosin, which enable them to contract d. have all of the above characteristics e. have only characteristics a and b
Kyphosis is?
A) ?a side-to-side, or lateral, curvature of the spine. B) ?an exaggerated inward curvature in the lumbar region of the spine. C) ?a humped curvature in the thoracic area of the spine.
What is found in the antrum of an oocyte?
A. Testosterone B. Thecal fluid C. Progesterone D. Estrogen E. The zona pellucida