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| Hindgut | ||
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| Profile view of a human embryo estimated at twenty or twenty-one days old. (Hindgut labeled at lower left.) | ||
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| Primitive kidney and bladder, from a reconstruction. (Hindgut labeled at upper right.) | ||
| Gray's | subject #241 1101 | |
| Carnegie stage | 10 | |
| Precursor | Mesenchyme | |
The hindgut (or epigaster) is the posterior (caudal) part of the alimentary canal. It includes the distal third of the transverse colon and the splenic flexure, the descending colon, sigmoid colon, rectum and upper part of the anal canal.
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Blood flow
Arterial supply is by the Inferior mesenteric artery, and venous drainage is to the portal venous system. Lymphatic drainage is to the chyle cistern.
Autonomic innervation
The hindgut is innervated via the inferior mesenteric plexus. Sympathetic innervation is from the Lumbar splanchnic nerves (L1-L2), parasympathetic innervation is from S2-S4.
Additional images
 Abdominal part of digestive tube and its attachment to the primitive or common mesentery. Human embryo of six weeks. |
 Tail end of human embryo twenty-five to twenty-nine days old. |
See also
External links
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Wikipedia content modification information:
- This page was last modified on 3 March 2008, at 10:20.
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