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Jejunum - Anatomy & Physiology (view source)
Revision as of 10:00, 11 July 2008
, 10:00, 11 July 2008→Species Differences
==Species Differences==
==Species Differences==
The position of the jejunum is variable between species as it lies in that part of the abdomen not occupied by other viscera.
===Canine===
===Canine===
===Horse===
===Horse===
*The coils of jejunum are confined to the left dorsal part of the abdomen.
*Jejunum is confined to the left dorsal part of the abdomen.
**It is restricted to this position by the large caecum on the right, and ascending colon ventrally on both sides.
**It is restricted to this position by the large caecum on the right, and ascending colon ventrally on both sides.
===Ruminant===
===Ruminant===
*It is pushed entirely to the right side of the abdomen by the [[The Rumen|rumen]] which is on the left.
*Jejunum is pushed entirely to the right side of the abdomen by the [[The Rumen|rumen]] which is on the left.
**Coils of the jejunum usually lie within the supraomental recess; although this can vary between individuals depending on fullness of the rumen and size of the uterus.
**Coils of the jejunum usually lie within the supraomental recess; although this can vary between individuals depending on fullness of the rumen and size of the uterus.
===Pig===
===Pig===
*Jejunumo lies in the caudoventral aspect of the abdominal cavity, mainly to the right of the midline.
*Jejunum lies in the caudoventral aspect of the abdominal cavity, mainly to the right of the midline.
**This is due to the presence of the ascending colon on the left.
**This is due to the presence of the ascending colon on the left.