During the defecation reflex, the

A. abdominal wall muscles relax.
B. glottis is opened.
C. diaphragm is lowered.
D. internal abdominal pressure is decreased.


Answer: C

Anatomy & Physiology

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A. are part of the lymphatic system. B. absorb fat molecules. C. are located in villi. D. All apply.

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Anatomy & Physiology