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Title: The Endocrine System
Description: Summary of Endocrine System, Definition of Hormones, and Definition of Glands, which are Exocrine and Endocrine Glands, Definition of Prostaglandins, and Action of Steroid and Non-Steroid Hormone.
Description: Summary of Endocrine System, Definition of Hormones, and Definition of Glands, which are Exocrine and Endocrine Glands, Definition of Prostaglandins, and Action of Steroid and Non-Steroid Hormone.
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1 : The Endocrine System
Hormones and Glands
- Endocrine system sends chemical messages, called hormones,
which modify cellular behavior
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- Endocrine system is made up of glands that release hormones,
which deliver messages
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Cells that have receptors for a hormone are called target
cells
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- Many functions depend on effects of 2 opposing hormones
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Insulin : promote liver to convert glucose to
glycogen
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Glands
- Gland is an organ that produces and releases a substance
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They Are : Pancreas, Salivary, Sweat, and Lachrymal
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Prostaglandins
- Nearly all cells have been shown to produce small amounts of
hormone-like substances called prostaglandins
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- Some cause smooth muscles to contract
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Hormone Action
- Hormones fall into 2 general groups :
o Steroid Hormones
o Nonsteroid Hormones
- Steroid Hormones are produced from cholesterol
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- Once in the cell, it can enter nucleus and change patter of gene
expression in cell
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- Nonsteroid hormones bind to receptors and cause the release of
secondary messenger that affect cell activities
Title: The Endocrine System
Description: Summary of Endocrine System, Definition of Hormones, and Definition of Glands, which are Exocrine and Endocrine Glands, Definition of Prostaglandins, and Action of Steroid and Non-Steroid Hormone.
Description: Summary of Endocrine System, Definition of Hormones, and Definition of Glands, which are Exocrine and Endocrine Glands, Definition of Prostaglandins, and Action of Steroid and Non-Steroid Hormone.