Ursula has been diagnosed with schizophrenia. If PET scans were done to measure her brain's activity,
which area would probably be underactive?
A) the hypothalamus and pituitary
B) the deepest portions of the brain, the medulla and reticular activating system
C) the frontal lobes
D) the visual cortex
C
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During the process of labor, what needs to dilate to 10 centimeters (4.5 inches) in preparation of the baby's exit?
a. the cervix b. the uterus c. the fallopian tubes d. the ovaries
People, such as pilots, who have to move quickly from lighted surroundings to night darkness use red light illumination. This is because
a. red light slows down dark adaptation. b. the rods are insensitive to red light. c. the cones are insensitive to red light. d. red light is a stimulating color and tends to keep pilots and military personnel aroused and alert.