The inferior mesenteric artery supplies blood to the
A. sigmoid colon.
B. transverse colon, descending colon, sigmoid colon, and rectum.
C. sigmoid colon and ascending colon.
D. transverse colon and descending colon.
E. transverse colon.
Answer: B
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Physical evidence that supports the sliding filament theory of muscle contraction includes
A) constant distance between Z lines during contraction. B) decreased width of the H band during contraction. C) increased width of the I band during contraction. D) decreased width of the A band during contraction. E) the I band + H band distance is constant during contraction.
The ____ gland produces tears
a. trigeminal b. choroid c. lacrimal d. orbital
________ stimulates the thyroid gland to secrete calcitonin.
A. A decrease in blood Ca2+ concentration B. The nerve impulses from a nerve C. An increase in blood Ca2+ concentration D. A releasing hormone from the pituitary gland
What is the name of the blood vessel found in the center of a hepatic lobule?
A. Sinusoid B. Hepatic vein C. Hepatic portal vein D. Hepatic transport vessel E. Central vein