Total peripheral resistance is affected primarily by
A) blood vessel diameter.
B) blood vessel length.
C) blood viscosity.
D) venous pressure.
E) turbulence.
A
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Which of the following features distinguishes skeletal muscle from smooth muscle?
a. Only smooth muscle contraction is modified by hormones. b. Only smooth muscle takes up Ca2+ from the extracellular fluid. c. Only skeletal muscle is neurogenic. d. Only skeletal muscle has a moderately developed sacroplasmic reticulum. e. Two of these.
Endocrine glands release their hormones into the blood via a duct system.
Answer the following statement true (T) or false (F)
What effect would compressing the inferior vena cava just below the diaphragm have on cardiac function?
A) Stroke volume would increase. B) Cardiac output would increase. C) Sympathetic stimulation of the heart would increase. D) Heart rate would decrease. E) None of the answers is correct.
Inhibin secreted by granulosa cells selectively inhibits secretion of FSH by the pituitary
Indicate whether the statement is true or false.