The ______ completely surrounds the male urethra.
A) Seminal vesicles
B) Ejaculatory ducts
c) Epididymae
D) Bulbourethrals
E) Prostate
Ans: E) Prostate
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James has a hemoglobin measurement of 16 g/100 ml blood. This is ________.
A) above normal B) normal only if James is an infant C) abnormally low D) within the normal range
What does not happen to a carbon dioxide molecule once it enters the bloodstream?
A) It is converted to a molecule of carbonic acid. B) It binds to the protein portion of hemoglobin molecules within red blood cells. C) It dissolves in plasma. D) It is converted by carbonic anhydrase. E) It binds to heme groups in hemoglobin.
Nerve tracts or fasciculi make up the
A) central canal. B) posterior gray horns. C) gray commissures. D) white columns. E) anterior gray horns.
The primary role of epithelial tissue in the stomach is
A. housing blood vessels and nerves. B. secretion of substances for chemical digestion. C. mixing and propulsion of foodstuffs. D. regulation of contraction.