The outermost layer of a blood vessel is the tunica adventitia.
a. true
b. false
Ans: a. true
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The iliac crest extends from the anterior superior iliac spine to the
A. anterior inferior iliac spine. B. posterior inferior iliac spine. C. anterior gluteal line. D. posterior gluteal line. E. posterior superior iliac spine.
Photoreceptors secrete the neurotransmitter
A) glutamate. B) acetylcholine. C) norepinephrine. D) dopamine.
The fact that large animals typically have lower basal metabolic rates than smaller animals can be explained by
a. their larger size which means they have more surface area for absorbing radiant energy, so they require less metabolic energy to stay warm. b. their larger size which makes them less susceptible to predation, so they don't have to use energy to escape from predators. c. their greater weight which makes them less inclined to move, so they expend less energy in locomotion. d. their lower surface to volume ratio which means they lose a lesser percentage of their energy to the environment. e. none of these.
Which of the following individuals is most likely to be in a negative nitrogen balance?
A. An adult woman with adequate protein intake B. A healthy pregnant woman C. A healthy adult man who exercises D. A 10-year-old child E. An elderly homeless man