The plural of diverticulum. As a person ages, pressure within the large intestine (colon) causes pockets of tissue (sacs) that push out from the colon walls. A small bulging sac pushing outward from the colon wall is a diverticulum. Diverticula can occur throughout the colon but are most common near the end of the left side of the colon, the sigmoid colon.
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In snakes and lizards, males have a pair of intromittent organs called hemipenes, protrusible saclike diverticula at the entrance of the cloaca. During copulation, the retractor muscles of the hemipenes relax, turning the sacs inside out and allowing the flow of semen along ...
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