Islets of Langerhans: Difference between revisions
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These are arranged in bundles in the [[Endocrine|endocrine]] region of the [[Pancreas|pancreas]]. They consist of alpha and beta cells. The alpha cells release [[Glucagon|glucagon]] which results in an increase in [[Blood|blood]] [[Glucose|glucose]] concentration. Glucagon causes the [[Liver|liver]] to convert [[Glycogen|glycogen]] into glucose by hydrolysis. The beta cells secrete trhe hormone molecule [[Insulin|insulin]] which has the opposite effect of glucagon by decreasing blood glucose concentration. Insulin binds to membrane-bound receptors on target cells facillitated diffusion of glucose into the cells. It also activates the enzyme glycogen synthetase which converts glucose into glycogen for storage. | These are arranged in bundles in the [[Endocrine|endocrine]] region of the [[Pancreas|pancreas]]. They consist of alpha and beta cells. The alpha cells release [[Glucagon|glucagon]] which results in an increase in [[Blood|blood]] [[Glucose|glucose]] concentration. Glucagon causes the [[Liver|liver]] to convert [[Glycogen|glycogen]] into glucose by hydrolysis. The beta cells secrete trhe hormone molecule [[Insulin|insulin]] which has the opposite effect of glucagon by decreasing blood glucose [[Concentration|concentration]]. [[Insulin|Insulin]] binds to membrane-bound receptors on target cells[[Facilitated_diffusion| facillitated diffusion ]]of [[Glucose|glucose]] into the cells. It also activates the enzyme[[Glycogen_synthase| glycogen synthetase ]]which converts [[Glucose|glucose]] into [[Glycogen|glycogen]] for storage. | ||
'''References''' | '''References''' | ||
Fox, S.I., 2011. Human Physiology. 12th ed. New York: McGraw-Hill | Fox, S.I., 2011. Human Physiology. 12th ed. New York: McGraw-Hill | ||
Revision as of 11:52, 1 December 2011
These are arranged in bundles in the endocrine region of the pancreas. They consist of alpha and beta cells. The alpha cells release glucagon which results in an increase in blood glucose concentration. Glucagon causes the liver to convert glycogen into glucose by hydrolysis. The beta cells secrete trhe hormone molecule insulin which has the opposite effect of glucagon by decreasing blood glucose concentration. Insulin binds to membrane-bound receptors on target cells facillitated diffusion of glucose into the cells. It also activates the enzyme glycogen synthetase which converts glucose into glycogen for storage.
References
Fox, S.I., 2011. Human Physiology. 12th ed. New York: McGraw-Hill