Conscious initiation of muscle contraction is controlled by
a. the spinal cord
b. the brain stem
c. the cerebral cortex
d. the thalamus
e. none of the above
C
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What is the effect of histamine release?
A) Histamine induces fever to accelerate tissue metabolism and defenses. B) Histamine increases local inflammation, increasing blood flow to the area. C) Histamine increases blood clotting and causes vasoconstriction to restrict blood loss. D) Histamine triggers the production of antiviral proteins in the cytoplasm of normal cells. E) Histamine binds to bacterial surfaces and enhances phagocytosis.
Increased levels of what two hormones cause male climacteric or andropause?
A. FSH and LH B. GnRH and FSH C. GNRH and LH D. None of these are correct.
Hydrostatic pressure is ________ and colloid osmotic pressure is ________ at the arterial end of a capillary.
A. higher; lower B. higher; higher C. lower; higher D. lower; lower
Cerebrospinal fluid is formed from blood by clusters of capillaries in the brain known as ________
A) choroid plexuses B) arachnoid villi C) ventricles D) sinuses