Under quiet conditions, blood returning to the heart retains about ________ of its oxygen content
A) 25 percent
B) 50 percent
C) 75 percent
D) 90 percent
E) 100 percent
C
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The regular cycling between constriction and dilation of arterioles feeding capillaries is known as
A) Vasocongestion. B) Vasodilation. C) Vasomotion. D) Vasospasm.
The hip joint has less freedom of movement than the shoulder joint because
A) the hip joint capsule is less elastic than the shoulder. B) the joint capsule of the hip is surrounded by muscles and the shoulder is not. C) the articulating parts of the hip are closer together than those of the shoulder. D) the hip has more supportive ligaments than the shoulder.
The function of a flagellum is to: Detect fluid movement in the environment Increase the absorptive surface area of the cell Move substances over the surface of the cell Propel a cell through its environment
What will be an ideal response?
The alpha cells of the islets of Langerhans in the pancreas secrete the hormone insulin.?
Indicate whether the statement is true or false