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2025-02-19T00:35:33Z

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			==Alpha Cell==

			Alpha cells are a type of [[endocrine cell]] found in the [[pancreas]]. They are primarily responsible for the production and secretion of the hormone [[glucagon]], which plays a crucial role in the regulation of [[blood glucose levels]].

			==Structure==

			Alpha cells are located in the [[islets of Langerhans]], which are clusters of cells within the pancreas. The islets contain several types of cells, including [[beta cells]], [[delta cells]], and [[PP cells]], each with distinct functions. Alpha cells are typically found on the periphery of the islets.

			==Function==

			The primary function of alpha cells is to produce and secrete glucagon. Glucagon is a peptide hormone that raises blood glucose levels by promoting [[glycogenolysis]] and [[gluconeogenesis]] in the [[liver]]. When blood glucose levels fall, such as between meals or during physical activity, glucagon is released to ensure a steady supply of glucose to the body, particularly the [[brain]].

			==Regulation==

			The secretion of glucagon by alpha cells is regulated by several factors:

			* '''Blood Glucose Levels''': Low blood glucose levels stimulate glucagon release, while high levels inhibit it.
			* '''Insulin''': Insulin, secreted by beta cells, has an inhibitory effect on glucagon secretion.
			* '''Amino Acids''': Certain amino acids can stimulate glucagon release, which helps in maintaining glucose levels after protein-rich meals.
			* '''Autonomic Nervous System''': The sympathetic nervous system can stimulate glucagon secretion during stress or exercise.

			==Clinical Significance==

			Dysfunction of alpha cells can lead to metabolic disorders. For instance, in [[diabetes mellitus]], the regulation of glucagon can be impaired, contributing to hyperglycemia. Understanding the role of alpha cells is crucial in developing treatments for such conditions.

			==Related Pages==

			* [[Beta cell]]
			* [[Delta cell]]
			* [[Pancreas]]
			* [[Glucagon]]
			* [[Insulin]]
			* [[Islets of Langerhans]]

			{{Endocrine system}}

			[[Category:Endocrine cells]]
			[[Category:Pancreas]]

Prab: CSV import

2025-02-17T01:48:00Z

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File:Langerhanssche_Insel.jpg|Alpha cell
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Alpha cell - Revision history

Prab: CSV import

Prab: CSV import