Lecture Week 1 & 2

Lecture Week 1 & 2 - Homeostasis Control or...

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Homeostasis
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Control or regulation of bodily processes at optimal levels Maintain normal values of heart rate, blood pressure, pH, blood glucose, respiration, digestion, etc. Can have set point ( 98°) or range ( 80- 110)
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Normal Values Blood pressure – 120/80 Heart rate – 60-70 Temperature - 98° F Blood glucose – 80-110 When system is overwhelmed, you get infection or pathology (disease)
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Homeostasis What helps to maintain it?
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Nervous system Endocrine system
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Nervous System
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Neurotransmitters Neurotransmitters are chemical mediators Work locally Nerves carry impulses Impulses are sent quickly Protective mechanism Reflexes
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Endocrine System
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Hormones Hormones are also chemical mediators Work systemically Travel through the blood to get to target Slower response than nerves Longer response than nerves
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Glands
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Exocrine Endocrine
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Exocrine Glands
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Have ducts Material gets secreted into a duct Ex: o Sebaceous glands o Mammary glands o Salivary glands o Sweat glands
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This note was uploaded on 02/11/2010 for the course AHS 132 taught by Professor Klinger during the Spring '09 term at Nassau CC.

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Lecture Week 1 & 2 - Homeostasis Control or...

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