Esophageal hiatus:
In human anatomy, the esophageal hiatus is a hole in the diaphragm through which the esophagus passes. It is located in the right crus of the diaphragm.
It is located approximately at level of the tenth thoracic vertebra (T10).
The esophageal hiatus is situated in the muscular part of the diaphragm at the level of the tenth thoracic vertebra, and is elliptical in shape. It is placed above, in front, and a little to the left of the aortic hiatus, and transmits the esophagus, the vagus nerves, and some small esophageal arteries. The right crus of the diaphragm loops around forming a sling around the diaphragm. Upon inspiration, this sling would constrict the diaphragm, forming an anatomical sphincter that prevents stomach contents from refluxing up the esophagus when intra-abdominal pressure rises during inspiration.
[edit] External links
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General anatomy of torso |
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Thorax/
Thoracic cavity |
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| Thoracic diaphragm |
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Abdomen/
Abdominal cavity |
Retroperitoneum • Paracolic gutters • Hepatobiliary triangle
anterior abdominal wall (Arcuate line, Linea alba, Tendinous intersection, Linea semilunaris, McBurney's point, Traube's space, Inguinal triangle) • Inguinal canal (Deep inguinal ring, Superficial inguinal ring, Intercrural fibers, Crura of superficial inguinal ring) • Lumbar triangle • regions (Epigastrium, Hypochondrium, Umbilical region, Latus, Hypogastrium, Inguinal region) • planes (Transpyloric plane, Intertubercular plane, Midclavicular line)
fascia ( Fascia of Camper, Fascia of Scarpa, Transversalis fascia, Renal fascia, Rectus sheath)
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Pelvis/
Pelvic cavity |
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| Perineum |
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