Which of the following is INCORRECT about erection?
A. Veins that exit the penis are compressed.
B. cGMP is produced that causes artery walls to relax.
C. Arteries entering the penis constrict.
D. Autonomic nerves release nitric oxide.
Answer: C
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Peptide hormone receptors are located inside the target cell
Indicate whether the statement is true or false
A baby has three copies of each chromosome in every cell. She is
A. aneuploid. B. euploid. C. diploid. D. polyploid.
Which of the following is correctly matched?
A) sympathetic: short preganglionic and long postganglionic fibers B) sympathetic: short preganglionic and short postganglionic fibers C) sympathetic: long preganglionic and short postganglionic fibers D) parasympathetic: short preganglion and long postganglionic fibers E) parasympathetic: contains only preganglionic fibers
Put these myofibers in the order they would be recruited as the body moves from a weak to a strong stimulus:
1. glycolytic fast-twitch fibers 2. fatigue-resistant oxidative fast-twitch fibers 3. fatigue-resistant slow-twitch fibers A) 3, 1, 2 B) 3, 2, 1 C) 2, 3, 1 D) 1, 3, 2 E) 1, 2, 3