BIO 309D S08 Lec9

BIO 309D S08 Lec9 - Extra credit#2 library tour and...

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The Endocrine System Chemical Control of the Body Extra credit #2 - library tour and assignment Next week during normal discussion time Lobby of the life science library - 2nd floor of the main building - the harry potter library Much slower system of communication, often used during long term changes - ie puberty Know how the endocrine glands are interrelated and know antagonism for the test - look for hormones that have opposite affects
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The Endocrine System Collection of specialized cells, tissues, and glands and the hormones they produce and secrete Important for communication and regulation throughout the body
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Endocrine Glands Composed of secretory cells that release their products into the fluid just outside the cells ductless
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Any cell in your body can receive the hormones released from these glands b/c every cell in your body has blood vessels near by
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Hormones Chemical messengers of the endocrine system Carried by the circulatory system - come into contact with every cell in the body - allows for long distance signaling Three main groups of hormones Peptide hormones Polypeptides or proteins - hydrophilic Amino acid derivatives Ex - epinepherine and norepinepherine - hydrophilic - soluble in water Steriod hormones Lipid - hydrophobic
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Iclicker question Which of the following can pass through the plasma membrane of cell? Steroid hormone because it is hydrophobic just like the hydrophobic tails of the phospholipid bilayer
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Iclicker question What is the building block of a peptide hormone? Amino Acid
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Iclicker question Which might be a hormone? Proteins and lipids. (insulin is a protein hormone and steriod is a lipid hormone)
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Hormones act only on target cells Cells affected by a specific hormone Have receptors that recognize specific hormone Binding of hormone to receptor leads to specific response Causes a change (response) in the cell Receptors are proteins
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cellular receptor - found inside the cell. Into which cells in the body can
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This note was uploaded on 03/25/2008 for the course BIO 309D taught by Professor Jessicawandelt during the Spring '08 term at University of Texas.

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BIO 309D S08 Lec9 - Extra credit#2 library tour and...

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