Smooth and cardiac muscles are under involuntary control
Indicate whether the statement is true or false
TRUE
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Erection of the penis is a result of vasodilation brought about by a reflex involving nonadrenergic, noncholinergic autonomic neurons.
Answer the following statement true (T) or false (F)
At its inferior end, the aorta branches to right and left __________ arteries.
A. internal iliac B. external iliac C. common iliac D. femoral E. inguinal
Cyanide poisoning quickly leads to death because it blocks the final cytochrome molecule in the electron transport system. Why is this blockage lethal?
A) All hydrogen ion pumps deactivate. B) NADH molecules cannot give off their electrons. C) FADH2 molecules cannot give off their electrons. D) Electrons cannot transfer to oxygen. E) Coenzyme Q disassociates and becomes nonfunctional.
The nephron loop does NOT do any secretion.
a. true b. false