Which of the following regulates the frequency of slow waves in the small intestine?
A)Circadian rhythms
B)Dietary intake of fiber
C)Intrinsic pacemaker cells in the smooth muscle
D)Parasympathetic nerve activity
E)Sympathetic nerve activity

Question

Quizplus · Accepted Answer

The intrinsic pacemaker cells in the smooth muscle of the small intestine regulate the frequency of slow waves, which control the contractions of the smooth muscle. Circadian rhythms may influence the overall motility of the digestive system but do not specifically regulate slow wave frequency. Dietary intake of fiber may affect the strength and duration of contractions but not the frequency of slow waves. Parasympathetic and sympathetic nerve activity can affect motility, but they do not directly control slow wave frequency.

Which of the Following Regulates the Frequency of Slow Waves