Asked by Jaziya | 26th Jul, 2009, 12:00: PM

Expert Answer:

The beta cells present in islets of Langerhans of pancreas produce the hormone insulin. The beta cells are stimulated to produce and secrete insulin when blood glucose levels start rising - eg. after eating. Actually, there is always a low level of insulin being secreted, but insulin secretion jumps as blood glucose rises. By contrast, when blood glucose levels fall, insulin secretion drops. Insulin stimulates a variety of different body cells to absorb glucose from the bloodstream, thus reducing the overall glucose level. Liver cells also absorb blood glucose which it stores as glycogen.

Answered by  | 29th Jul, 2009, 08:04: AM

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