Digestive system - pancreas, Biology

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PANCREAS

It is an elongated, leaf like, yellowish or orangish in colour. Lying partly behind stomach.
16 cm long, 2.5 cm. wide & weight about 60 gms. It consists of head, body & tail.
Tail meets spleen.

It is Heterocrine gland, outer, part is exocrine (follicles) and inner part is endocrine
In exocrine part, pencreatic duct or duct of wirsbug present.
In endocrine part, islet of Langerhanse present. In islet of Langerhanse alpha cells and beta cells present.
Alpha cells secrete glucagone hormone to increase glucose level in blood.
Beta cells secrete insulin hormone to decrease glucose level in blood.
Due to defficiency of insulin diabetes malitus is caused.

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