endocrine system - ms. kropac
TRANSCRIPT
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Endocrine SystemAn Overview
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Endocrine SystemThere are two ways to maintains homeostasis
Directly: Using specific responses, nervous systemIndirectly: Using a general response, chemicals released over a large area
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Endocrine System
Three steps in chemical communication1) Synthesis of the hormone at he gland.
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Endocrine System
Three steps in chemical communication1) Synthesis of the hormone at he gland.2) Release of the hormone.
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Endocrine System
Three steps in chemical communication1) Synthesis of the hormone at he gland.2) Release of the hormone.3) A cellular response.
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Endocrine System
Classes of messengers1) Nervous: NT released at synapses.
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Endocrine System
Classes of messengers1) Nervous: NT released at synapses.2) Endocrine: Chemicals released by endocrine cells.
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Endocrine SystemClasses of messengers1) Nervous: NT released at synapses.2) Endocrine: Chemicals released by endocrine cells.3) Intra-cellular: work inside the cell, secondary messengers.
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Hormones
Hormones: Chemical messengers that help regulate cellular activity.
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Hormones
Hormones: Chemical messengers that help regulate cellular activity.
Produced in one part of the body and act on cells in another.
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Hormones
Hormones: Chemical messengers that help regulate cellular activity.
Produced in one part of the body and act on cells in another.Secreted in small amounts
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HormonesHormones: Chemical messengers that help regulate cellular activity.
Produced in one part of the body and act on cells in another.Secreted in small amountslong-lasting, slow-acting
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HormonesHormones: Chemical messengers that help regulate cellular activity.
Are released by the endocrine system, travel via bloodstream.A cell must have a receptor for a hormone to be impacted by it.
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Hormones
There are two main classes of hormones:
SteroidProtein
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Steroid Hormone
-Made from cholesterol-Fat Soluble-Diffuses from cell produced
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Steroid Hormone
-Made from cholesterol-Fat Soluble-Diffuses from cell produced-Receptor in cytoplasm, moves into nucleus to interact with gene(leads to transcription)-Ex/ Sex Hormones
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Steroid Hormone Protein Hormone
-Made from cholesterol-Fat Soluble-Diffuses from cell produced-Receptor in cytoplasm, moves into nucleus to interact with gene(leads to transcription)-Ex/ Sex Hormones
-Chain of amino acids-Water Soluble-Released from cell produced
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Steroid Hormone Protein Hormone
-Made from cholesterol-Fat Soluble-Diffuses from cell produced-Receptor in cytoplasm, moves into nucleus to interact with gene(leads to transcription)-Ex/ Sex Hormones
-Chain of amino acids-Water Soluble-Released from cell produced-Receptor activates secondary messenger complex (cAMP), activates enzymes-Ex/ Insulin, Growth Hormone
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