Intercallated disks are characteristic of ____ muscle.
a) striated
b) skeletal
c) cardiac
d) smooth
Answer: c) cardiac
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Intestinal blood enters the inferior side of the liver by way of the __________ vein.
A. gastro-omental (gastroepiploic) B. hepatic C. hepatic portal D. splenic E. inferior mesenteric
Urine reaches the urinary bladder by
A) suction from the empty bladder. B) differential pressure exerted on the ureters by the movements of the digestive organs. C) the force of gravity. D) peristalsis. E) None of the answers are correct.
A [HCO3-]/[CO2] ratio falling below 20/1 due to a decrease in [CO2] indicates respiratory acidosis
Indicate whether the statement is true or false
The diameter of many blood vessels is controlled exclusively by the ________ nervous system, and decreases in the activity of this system result in ________.
A. parasympathetic; vasodilation B. sympathetic; vasodilation. C. somatic; vasoconstriction. D. sympathetic; vasoconstriction. E. parasympathetic; vasoconstriction