What purpose do mediators of inflammation serve?
A. They cause blood vessels to dilate.
B. They cause redness at the site of the injury.
C. They cause pain at the site of the injury.
D. They cause injured tissue to swell.
Answer: A
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The placental membrane is composed of
A. the embryonic disc. B. the amnion and chorion. C. a single layer of epithelial cells. D. a double layer of epithelial cells.
Adolescence begins at the period of sexual maturity called
A) menopause. B) puberty. C) senescence. D) postnatal. E) gestation.
The first step in the visual transduction process that occurs in the retina is
a) activation of amacrine cells. b) absorption of scattered light by the pigmented epithelium. c) interruption of the dark current. d) absorption of light by photopigments. e) generation of action potentials in the optic nerve.
An increase in EDV ____________________ the stroke volume
Fill in the blank(s) with correct word