Rectum And Anus

In the pelvic cavity, the rectum is the terminal, straight portion of the colon and ultimately terminates as the anus. The transition from sigmoid colon to rectum occurs at approximately the S3 vertebral level, where the rectum is covered anteriorly by parietal peritoneum and thus is a retroperitoneal structure.

Transverse colon

Transverse mesocolon

Greater omentum (cut)

Right (hepatic) colic flexure

Haustra

Taenia coli

Ascending colon

Transverse colon

Transverse mesocolon

Greater omentum (cut)

Right (hepatic) colic flexure

Haustra

Taenia coli

Ascending colon

Mesoappendix Appendix

Peritoneal reflection

Hepatic Colic Flexure

Left (splenic) colic flexure

Descending colon

Epiploic appendices

Sigmoid colon

Mesoappendix Appendix

Peritoneal reflection

Left (splenic) colic flexure

Descending colon

Epiploic appendices

Sigmoid colon

Transverse colon

Inferior-

mesenteric a.

Peritoneal reflection

Peritoneal Reflection

Marginal a. (of Drummond)

Left colic flexure Left colic a.

Descending colon

Sigmoid aa.

Marginal a. (of Drummond)

Left colic flexure Left colic a.

Descending colon

Sigmoid aa.

Superior rectal a. Sigmoid colon Rectum Anus

Figure 10-2: A. Hindgut with the small intestine removed. B. Primary blood supply to the hindgut is through the inferior mesenteric artery.

Baby Sleeping

Baby Sleeping

Everything You Need To Know About Baby Sleeping. Your baby is going to be sleeping a lot. During the first few months, your baby will sleep for most of theday. You may not get any real interaction, or reactions other than sleep and crying.

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