Explain the drop in blood pressure that occurs when one goes from lying down to standing up
A.
The heart rate decreases. This is due to the baroreceptor reflex reducing sympathetic output to the SA node.
B.
An increase in afterload causes a drop in stroke volume, cardiac output, and blood pressure.
C.
An increase in preload causes a drop in stroke volume, cardiac output, and blood pressure.
D.
Venous compliance allows blood to pool in the legs, decreasing venous return. This causes a drop in cardiac output and blood pressure.
D
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Modified sweat glands that secrete earwas are called ________ glands.
Fill in the blank(s) with the appropriate word(s).
Blockage of the ileocecal valve would prevent
A. lymph from entering the jejunum. B. chyme from entering the ileum. C. bile from entering the duodenum. D. chyme from entering the large intestine. E. pancreatic juice from entering the duodenum.
The elbow contains ________ articular capsule(s).
A. one B. two C. three
Compared to the right ventricle, the left ventricle has all the following characteristics except that it
A) has a thicker wall. B) is round in cross section. C) pumps a greater volume. D) contracts harder. E) produces about four to six times more pressure when it contracts.