Blood from the descending colon and rectum is carried to the hepatic portal vein by the
A. superior mesenteric vein.
B. inferior mesenteric vein.
C. splenic vein.
D. gastric vein.
E. cystic vein.
Answer: B. inferior mesenteric vein.
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The three types of protein fibers found in connective tissue are
A. proteoglycan, elastin, and hyaluronic acid. B. chondronectic, osteonectin, and fibronectin. C. collagen, elastin, and reticular fibers. D. proteoglycan, elastin, and reticular fibers. E. hyaluronic acid, collagen, and reticular fibers.
Which of the following statements is false?
A) Secretin and CCK are produced by the stomach and are important hormones in regulating digestion. B) Parietal cells are activated during the cephalic phase. C) The gastroileal and gastroenteric reflexes accelerate movement of materials throughout the small intestine. D) Teniae coli of the large intestine correspond to the muscularis mucosa of the small intestine. E) The external anal sphincter is composed of skeletal muscle.
White blood cells engulf foreign particles by means of
A. macrocytosis. B. phagocytosis. C. exocytosis. D. pinocytosis. E. prestocytosis.
The pigment produced by melanocytes is ________.
Fill in the blank(s) with the appropriate word(s).