Digestive system - small intestine, Biology


A narrow tube 6 m long. In rabbit 4 m. long.Differentiated into duodenum, jejunum & Ileum.

(i) Duodenum -

2.5 cm long. C-shaped (U-shaped in rabbit).

It receives hepatopancreatic duct formed by the union of bile duct & pencreatic duct.

It opens at papillae of veter point, here splinctor of Oddi present.

In submucosa Brunner's glands present, open at crypt of leihberkuhn.

Villi are large.

(ii) Jejunum -

2.4 m long. It's walll is thicker and more vascular then ileum.

(iii) Ileum -

3.6 m long. Wall is thiner and less vascular.

On wall Payer's patches (30-60, yellow, lymphoid tissue) are present.

Brunner's glands are absent. Here surface area is increased, 600 times by there ways.

Posted Date: 10/1/2012 7:39:32 AM | Location : United States

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