The parotid duct pierces (passes through) the ___________ muscle on its way to the oral cavity.
A. lateral pterygoid
B. zygomatic major
C. masseter
D. buccinator
Answer: D. buccinator
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The right and left hemispheres remain in constant communication primarily through commissures in the
A. pituitary. B. corpus callosum. C. medulla oblongata. D. hypothalamus. E. pons.
A sample of John's blood shows a high level of pyrogens. This would indicate that John
A) is feeling achy. B) is producing T lymphocytes. C) has a sore throat. D) is running a fever. E) has swollen lymph nodes.
An organelle is
A. a small structure within a cell. B. a group of organs with a common set of functions. C. a structure composed of several tissue types. D. the basic structural unit of all living organisms. E. a group of cells with similar structure and function.
A 54-year-old man with a long history of alcohol abuse presents to the emergency department with rapidly increasing abdominal distention most likely resulting from an alteration in portal systemic blood flow. Which of the following characteristics is associated with the portal vein or the portal venous system?
(A) Lower blood pressure than in the IVC (B) Least risk of venous varices because of portal hypertension (C) Distention of the portal vein resulting from its numerous valves (D) Caput medusae and hemorrhoids caused by portal hypertension (E) Less blood flow than in the hepatic artery