Which of the following stimuli is detected by a chemoreceptor?
A) increased blood pressure B) decreased blood oxygen concentration
C) vasodilation of arterioles D) stretch in the walls of arteries
Answer: B
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A malnourished person might have abnormally low levels of plasma proteins. As a result, colloid osmotic pressure
A. increases, and there is fluid retention in the interstitial space. B. increases, and so blood volume is abnormally high. C. decreases, and there is fluid retention in the interstitial space. D. decreases, and so blood volume is abnormally high.
The term used to describe tissue death is ________.
Fill in the blank(s) with the appropriate word(s).
The precentral gyrus ________
A) is a center for audition B) is the cortical area to which taste sensations come C) is a major motor area of the brain D) is important for somatosensation
In skeletal muscle cells, calcium initiates contraction by binding to:
A. tropomyosin. B. actin. C. troponin. D. myosin. E. the thick filament.