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Understanding Pancreatic Function and Hormonal Regulation in Endocrinology

This PowerPoint presentation explores the essential roles of the pancreas as both an endocrine and exocrine gland. It explains the structure of the islets of Langerhans, highlighting their function in secreting insulin and glucagon. The presentation also elucidates how blood glucose levels are regulated through negative feedback mechanisms and discusses the significance of homeostasis in mammals. Additionally, it covers the advantages of utilizing genetically engineered human insulin for treating diabetes, enhancing our understanding of hormonal impact on bodily functions.

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Understanding Pancreatic Function and Hormonal Regulation in Endocrinology

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  1. Objectives • Explain what is meant by the term endocrine gland. • Describe the cellular structure of an islet of Langerhans from the pancreas. • Outline the role of the pancreas as an endocrine gland. This Powerpoint is hosted on www.worldofteaching.com Please visit for 100’s more free powerpoints

  2. ` http://www-medlib.med.utah.edu/WebPath/ENDOHTML/ENDO032.html

  3. Pancreas • Exocrine Gland: a gland that secretes externally through a duct • Endocrine Gland: a gland that secretes hormones into the bloodstream.

  4. Pancreas • The pancreas has an exocrine portion that secretes digestive enzymes that are carried through a duct to the duodenum. The endocrine portion consists of the pancreatic islets, which secrete glucagons and insulin.

  5. Objectives • Explain how the blood glucose concentration is regulated by negative feedback control mechanisms, with reference to insulin and glucagon. • Discuss the importance of homeostasis in mammals, and explain the principles of homeostasis in terms of receptors, effectors and negative feedback.

  6. Hormones • Most hormones circulate in blood, coming into contact with essentially all cells. However, a given hormone usually affects only a limited number of cells, which are calledtarget cells. A target cell responds to a hormone because it bears receptors for the hormone. • The effector is usually an organ.

  7. Objectives • Explain the advantages of treating diabetics with human insulin produced by genetic engineering.

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