Cartilage cells occupy small chambers called ________.
Fill in the blank(s) with the appropriate word(s).
lacunae
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The juxtaglomerular apparatus regulates the filtration rate by _____
A) vasodilation of the peritubular capillaries B) vasoconstriction of the peritubular capillaries C) increasing osmotic pressure in the glomerular capsule D) renin-angiotensin II vasoconstricting both the afferent and efferent arterioles
Released by cells as part of the nonspecific, second line of defense against infection, interferon functions in
a. interfering with the replication of extracellular bacteria. b. inhibiting replication of viruses in cells infected with them. c. preventing viruses from adhering to the cell surface and injecting their genetic material. d. is a cytokine that blocks replication of virally infected cells. e. more than one of these.
________ stimulate(s) the development and maturation of the female reproductive organs and the secondary sex characteristics.
A. Progesterone B. Estrogens C. Gonadotropin-releasing hormone D. Testosterone
At a capillary bed, a vasoconstrictor
A. stimulates precapillary sphincters and decreases local blood flow. B. constricts local arterioles, thereby increasing pressure and increasing local blood flow. C. constricts precapillary sphincters and thereby increases local blood flow. D. dilates local arterioles, thereby increasing pressure and increasing local blood flow. E. inhibits precapillary sphincters to relax and decreases local blood flow.