The outermost wall of an artery or vein is called the ________ and in large arteries and veins contains the ________
A) tunica intima; basement membrane
B) tunica media; smooth muscle
C) tunica intima; endothelium
D) tunica externa; vasa vasorum
E) tunica externa; valves
D
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Endocrine glands
A. lack ducts and secrete their products onto the skin surface. B. secrete mucus directly into a body cavity. C. possess ducts to secrete their products into the bloodstream or into interstitial fluid. D. lack ducts and secrete their products into the bloodstream or into interstitial fluid. E. possess short ducts and secrete their products directly onto the skin surface.
Which of the following cranial nerves is mispaired?
A. Facial - VII B. Abducens - V C. Accessory - XI D. Oculomotor - III
The specialized cells in the parathyroid glands that secrete parathormone are __________.
a. follicular epithelial cells b. C cells c. cells of the pars distalis d. chief cells
The partial pressure of oxygen in atmospheric air at sea level is
A) greater than the partial pressure of oxygen in atmospheric air at the top of Mt. Everest. B) less than the partial pressure of oxygen in atmospheric air at the top of Mt. Everest. C) equal to the partial pressure of oxygen in atmospheric air at the top of Mt. Everest. D) equal to the sum of partial pressures from carbon dioxide and nitrogen. E) equal to the partial pressure of carbon dioxide in atmospheric air at the top of Mt. Everest.