Why is vasodilation prominent in the skin when a person increases physical activity?
A. It increases delivery of nutrients to the skin to induce sweating.
B. Because skeletal muscles are close to the skin, they receive the oxygen via diffusion.
C. Heat is dissipated across the skin from the blood to help cool the body.
D. Exercise produces metabolites that induce vasodilation.
Answer: C. Heat is dissipated across the skin from the blood to help cool the body.
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The point of attachment for muscles that extend and rotate the head is the
A) posterior clinoid process. B) mastoid process. C) styloid process. D) external occipital protuberance. E) articular tubercle.
The plasma clearance of the harmless foreign compound ____________________ is equal to the GFR
Fill in the blank(s) with correct word
A 78-year-old man is suffering from ischemia of the suprarenal glands. This condition results from rapid occlusion of direct branches of which of the following arteries?
(A) Aorta, splenic, and inferior phrenic arteries (B) Renal, splenic, and inferior mesenteric arteries (C) Aorta, inferior phrenic, and renal arteries (D) Superior mesenteric, inferior mesenteric, and renal arteries (E) Aorta and hepatic and renal arteries
During times of stress, elevated levels of _______ often occur, which explains why we get a cold during final exam time.
A. cortisol B. aldosterone C. ACTH D. androgens