The O2 content of blood heading toward working muscle is compared to that of blo

Question

The O2 content of blood heading toward working muscle is compared to that of blood circulating toward the lungs. A) higher B) lower C) the same D) not relevant ? What's one thing that can increase blood flow? A) Release of nitric oxide that constrict B) C) D) E) blood vessels Release of nitric oxide that relaxes smooth muscle of arteries Release of carbon dioxide that relaxes smooth muscle of arteries Release of carbon dioxide that constricts blood vessels Release of hydrogen sulfide that assist in pumping heart Which is least likely about arteries? A) Thick walls B) Carries blood away from the heart C) Branches off into arterioles D) Mainly carries 02 E) Has valves

Explanation / Answer

A) higher

B) release of nitirc oxide that relaxes smooth muscles of arteries.

E) Has valves

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