Endocrine system Notes

Chapter 39 Notes The Endocrine System The endocrine system is make of glands that move around their products into the bloodstream. There products broadcast messaged finishedout the body. endocrines be chemical substances that travel through the bloodstream and affect the activities of other cubicleular phones. They accommodate to specific chemical receptors on those jail cells. Cells that have receptors for a consequence endocrine gland be called target cells. If a cell doesnt have a particular receptor or receptors that dont oppose to the hormone, then the hormone has no effect on it. Glands are organs that reachs and freeings a substance, or secretion. Exocrine glands release their secretions through tube like structures called ducts. These embroil sweat, teas, and digestive juices. Endocrine glands release their secretions (hormones) directly into the bloodstream. sex hormone hormones Made of lipid called cholesterol print cell tissue layers easily 1.   Â Â Â Â Â Â Â Enters cell by passing though its tissue layer 2.         Binds to a steroid receptor proteins (target cells only) forming hormone-receptor complex 3.         Hormone receptor complex enters nucleus of cell binds to DNA correspond sequence 4.         Binding initiates transcription of specific genes to template ribonucleic acid 5.

        mRNA moves into the cytoplasm and directs protein synthesis Hormone-receptors complexes work regularly Steroid hormones affect gene expression directly, produce dramatic changed in cell and organism activity Non -steroid hormones Made of proteins, small pe! ptides, and change amino acids Generally cigarettenot pass through cell membrane 1.         Binds to receptor on cell membrane 2.         Binding free an enzyme on inner get on of cell membrane 3.         Enzyme activated secondary messaged that carry the message of the hormone inner the cell. Calcium ions, cAMP (cyclic adenosine monophosphate), nucleotides, and even fatty acids can exercise as second messengers. 4.         Once released, these second messengers activated a wide range of other cell activates Other than violent blood cells, all cells have been shown to produce... If you want to get a full essay, order it on our website: OrderCustomPaper.com

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