What are the three subdivisions of the small intestine?
A) cecum, colon, rectum
B) duodenum, jejunum, ileum
C) cardiac, body, pylorus
D) ileum, cecum, rectum
B
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Although it clearly has an effect upon the quality of life, there is no evidence to show that exercise prolongs ________.
Fill in the blank(s) with the appropriate word(s).
Aged and damaged erythrocytes are broken down by macrophages in all of the following places except the
A) spleen. B) liver. C) bone marrow. D) kidney. E) None of the answers is correct.
When vasodilation doubles the vessel diameter, what is the change in resistance?
A. Reduced by half B. Doubles (twice the original value) C. Reduced by 1/4th of the original value D. Reduced to 1/16th of the original value
What is a function of catecholamines?
a) to increase alertness and prepare the body for physical activity b) to decrease alertness and induce sleep c) to slow the heart rate, decrease blood pressure and raise metabolic rate