Changes

==Introduction==

==Introduction==

====Development====

====Development====

The small intestine develops from the digestive tube, which exists ventrally in the developing embryo. The digestive tube is endoderm, and therefore the small intestine and it's associated glands develop primarily from endoderm. Splanchnic mesoderm surrounds the digestive tube and gives rise to muscles of the tunica muscularis (for [http://en.wikipedia.org/wiki/Peristalsis| peristalsis]), blood vessels in the submucosa and connective tissue of the serosa.  

The small intestine develops from the digestive tube, which exists ventrally in the developing embryo. The digestive tube is endoderm, and therefore the small intestine and it's associated glands develop primarily from endoderm. Splanchnic mesoderm surrounds the digestive tube and gives rise to muscles of the tunica muscularis (for peristalsis), blood vessels in the submucosa and connective tissue of the serosa.  

The intestines begin as a straight tube, suspended by the dorsal mesentry. The midgut and mesentry elongate to form a loop. The descending limb of the loop will form the [[Duodenum - Anatomy & Physiology|duodenum]], [[Jejunum - Anatomy & Physiology|jejunum]] and [[Ileum - Anatomy & Physiology|ileum]]. The ascending limb will form the terminal portion of the [[Ileum - Anatomy & Physiology|ileum]], [[Caecum - Anatomy & Physiology|caecum]] and first half of the [[Colon - Anatomy & Physiology|colon]]. The midgut loop rotates about the cranial mesenteric artery in a clockwise direction (when viewed dorsoventrally). It undergoes a 270° rotation so that the [[Caecum - Anatomy & Physiology|caecum]] and ascending [[Colon - Anatomy & Physiology|colon]] ends up on the right, and the small intestine ends up on the left.

The intestines begin as a straight tube, suspended by the dorsal mesentry. The midgut and mesentry elongate to form a loop. The descending limb of the loop will form the [[Duodenum - Anatomy & Physiology|duodenum]], [[Jejunum - Anatomy & Physiology|jejunum]] and [[Ileum - Anatomy & Physiology|ileum]]. The ascending limb will form the terminal portion of the [[Ileum - Anatomy & Physiology|ileum]], [[Caecum - Anatomy & Physiology|caecum]] and first half of the [[Colon - Anatomy & Physiology|colon]]. The midgut loop rotates about the cranial mesenteric artery in a clockwise direction (when viewed dorsoventrally). It undergoes a 270° rotation so that the [[Caecum - Anatomy & Physiology|caecum]] and ascending [[Colon - Anatomy & Physiology|colon]] ends up on the right, and the small intestine ends up on the left.

'''Click here for information on [[Intestines, Small and Large - Pathology|Pathology of the Small and Large Intestines]]'''

'''Click here for information on [[Intestines, Small and Large - Pathology|Pathology of the Small and Large Intestines]]'''

'''Click here for information on [[Equine Alimentary System  - Anatomy & Physiology| The Horse's Small Intestine]]'''

'''Click here for information on [[Alimentary System  - Horse Anatomy#Small Intestine| The Horse's Small Intestine]]'''

[http://stream2.rvc.ac.uk/Anatomy/bovine/Pot0048.mp4 Pot 48 The Small and Large intestine of the Ruminant]

|videos = [[Video: Ruminant small and large intestine potcast|Ruminant small and large intestine potcast]]<br>[[Video: Ruminant abdomen potcast|Ruminant abdomen potcast]]<br>[[Video: Foal gastrointestinal tract potcast|Foal gastrointestinal tract potcast]]<br>[[Video: Lateral view of the feline thorax and abdomen potcast|Lateral view of the feline thorax and abdomen potcast]]<br>[[Video: Female dog abdomen dissection|Female dog abdomen dissection]]<br>[[Video: Abdominal viscera of the horse dissection|Abdominal viscera of the horse dissection]]<br>[[Video: Equine left-sided abdominal and thoracic topography dissection|Equine left-sided abdominal and thoracic topography dissection]]<br>[[Video: Equine left-sided abdominal and thoracic topography dissection 2|Equine left-sided abdominal and thoracic topography dissection 2]]<br>[[Video: Ovine large and small intestine dissection|Ovine large and small intestine dissection]]<br>[[Video: Porcine abdomen dissection|Porcine abdomen dissection]]

|Vetstream = [https://www.vetstream.com/canis/search?s=intestine Intestinal diseases and Surgery]

[[Category:Small Intestine - Anatomy & Physiology]]

[[Category:Small Intestine - Anatomy & Physiology]]

[[Category:To Do - AimeeHicks]]

[[Category:To Do - AimeeHicks]]