Small intestine of Dog

Small intestine of Dog

Small intestine of Dog length is 4 m. It is situated in the abdominal cavity filling up all the space behind liver and stomach.

The duodenum begins at the pylorus, passes backwards and upwards first on the visceral face of the liver and then in contact with the right flank to the pelvic inlet.

Here it turns inwards, passes forwards along the medial aspect of the left colon and at the left kidney bends downward and joins the jejunum.

The remainder of the small intestine forms numerous coils and attached by the wide mesentery to the sublumbar region.

The terminal part passes forwards along the medial face of the caecum and opens into the colon at the ileo-colic orifice.

The bile duct and minor pancreatic ducts open into the duodenum about 5 to 8 cm from the pylorus.

The major pancreatic duct opens 2.5 cm further back.

Payer’s patches are numerous, elliptical and the last one is band like and reaches the end of the ileum.