The connective tissue covering the outer surface of a bone is (the)
A) matrix.
B) osteon.
C) periosteum.
D) endosteum.
E) articular cartilage.
C) periosteum.
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The inferior mesenteric artery supplies blood to the
A. transverse colon. B. transverse colon and descending colon. C. sigmoid colon. D. sigmoid colon and ascending colon. E. transverse colon, descending colon, sigmoid colon, and rectum.
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
An inflammation of sebaceous glands that occurs during adolescence is
A. acne vulgaris. B. psoriasis. C. impetigo. D. decubitus ulcer.
During its embryological development, the autonomic nervous system forms from
A. neural tube cells. B. neural crest cells. C. both neural tube cells and neural crest cells.