TRC: Constipation

Constipation

This figure depicts the causative factors for constipation. Common physiological factors include:

overstimulation of the sympathetic system
inhibition of the parasympathetic system
significant resorption of water in the large bowel
lack of significant bulk in the lumen

These physiological effects can arise from co-morbid disease states and/or concomitant drug use (see drug-induced constipation for a listing of drugs that can cause constipation). However, patient-related factors are also common and includ lack of exercise or water intake.

I. Stimulation of sympathetic nerves slows gastrointestinal movements.

II. Increasing parasympathetic tone increases colonic motility.

Extra info: The sympathetic and parasympathetic neurons of the autonomic nervous system have opposite effects on GI motility.

Option explanation:

I is true and II is false

I is true and II is true

I is false and II is false

I is false and II is true

Constipation

Constipation

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