Compared to males who train for endurance events, females who train for such events
typically
A) maintain a lower percentage of body fat.
B) develop a higher percentage of muscle tissue because of estrogen.
C) develop a higher percentage of muscle tissue because of testosterone.
D) maintain a higher percentage of body fat.
D
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The arteries
a. serve as rapid-transit passageways from the heart because of their large radii b. act as a blood reservoir because they have the capacity to store large volumes of blood with little change in their internal pressure c. are the major sites of blood flow resistance in the vasculature d. are the site of exchange between the blood and surrounding tissues e. always carry oxygenated blood
The coronary sulcus is a groove that
A) marks the border between the atria and ventricles. B) marks the boundary line between the right and left ventricles. C) marks the boundary line between the right and left atria. D) separates the atrioventricular valves from the atria. E) separates the coronary arteries from the coronary veins.
The ventral nuclei of the thalamus perform all of the following functions except
A) relaying input from basal ganglia to the motor areas of the cerebral cortex. B) relaying input from cerebellum to the motor areas of the cerebral cortex. C) relaying general sensory input to the primary sensory cortex. D) projecting visual and auditory information to the visual and auditory cortices.
By definition, an organ is composed of two or more __________ types.
A. organelle B. tissue C. organ system D. molecule E. cell