Figure 1632

Photograph of the large intestine. This photograph shows the outer (serosal) surface (left) and internal (mucosal) surface (right) of the transverse colon. On the outer surface, note the characteristic features of the large intestine: a distinctive smooth muscle band representing one of the three teniae coli (TC); haustra coli (HC), the sacculations of the colon located between the teniae; and omental appendices (OA), small peritoneal projections filled with fat. The smooth mucosal surface shows semilunar folds (arrows) formed in response to contractions of the muscularis externa. Compare the mucosal surface as shown here with that of the small intestine (Fig. 16.17).

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