Melinda has Parkinson disease. Her movements are slowing and she has difficulty initiating voluntary muscular actions. The region that is affected in her brain is the
A. amygdala.
B. basal ganglia.
C. frontal lobe.
D. parietal lobe.
Answer: B
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The sympathetic division pathway that results in innervation of the pelvic organs has its spinal cord segment origin in
A. T1-T2. B. T1-L2. C. T1-T4. D. T5-T12. E. T10-L2.
Hydrochloric acid keeps the stomach contents at a pH of
A) 6.5-8.0. B) 1.5-2.0. C) 4.5-6.0. D) 7.0. E) 3.5-5.0.
Which statement about the plasma membrane is true?
a. It appears trilaminar under a light microscope. b. Its glycocalyx serves as receptor sites for binding chemical messengers in the ECF. c. It is impermeable to lipid-soluble substances. d. Some of its carriers transport ions. e. Its channels are impermeable to any substance smaller than 0.8 nm in diameter.
African-American women are _____ likely than white women to have performed fellatio, and AfricanAmerican men are _____ likely than white men to have performed cunnilingus.
A. less; less B. more; more C. more; less D. less; more