Norepinephrine is classified as a(n):
a. hormone
b. neurotransmitter
c. hormone and a neurotransmitter
d. amino acid
e. enzyme
c
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Water has a
A. high specific heat, and this tends to cause large amounts of sweating.?B. high specific heat, and this tends to keep body temperature relatively constant.?C. low specific heat, and this tends to lead to variability in body temperature.?D. low specific heat, and this tends to minimize sweating.?E. low specific heat, and this tends to result in chills and shivering.
The bulges that give the lymphatic vessels the "string of beads" appearance are caused by
A) thickenings in the endothelial lining of the lymph vessels at evenly spaced intervals. B) regions of higher pressure within the lymph vessels, which cause the walls to bulge. C) closely spaced valves within the vessels. D) periodic inflammation of the tissues that remove bacteria and viruses from other body tissues. E) None of the answers are correct.
Where are the cell bodies of almost all motor neurons situated within the spinal cord?
a. cauda equina b. cervical ganglia c. dorsal horn d. lateral horn e. ventral horn
Which of the following types of fractures has the highest risk of infection?
A. Displaced fracture B. Compression fracture C. Compound fractured. D. Greenstick fracture