Which of the following best explains the drop in blood pressure that occurs when one goes from lying down to standing up?
A. An increase in afterload causes a drop in stroke volume, cardiac output, and blood pressure.
B. Venous compliance allows blood to pool in the legs, decreasing venous return. This causes a drop in cardiac output and blood pressure.
C. An increase in preload causes a drop in stroke volume, cardiac output, and blood pressure.
D. The heart rate decreases. This is due to the baroreceptor reflex reducing sympathetic output to the SA node.
Answer: B
You might also like to view...
The term osteoid refers to the organic part of the matrix of compact bones
Indicate whether the statement is true or false
The cerebrum develops from the embryonic region called the
A. telencephalon. B. mesencephalon. C. diencephalon. D. metencephalon. E. rhombencephalon.
A type of arthritis that involves accumulations of uric acid crystals is calledÂ
A. osteoarthritis. B. gout. C. rheumatoid arthritis. D. osteoporosis.
The pulmonary trunk splits into what structure, taking blood to the lungs?
A. Pulmonary trunk B. Pulmonary veins C. Pulmonary valve D. Pulmonary arteries