march 3 - March 3 Bio Skin Derivatives many diverse...

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March 3 Bio Skin Derivatives many diverse structures are derived from the epidermis Sebaceous and sweat glands secrete their products into ducts and are thus: exocrine glands endocrine glands Homeostasis = a state of relative internal constancy must constantly adjust in response to changes in the internal and external environments maintained by negative feedback → corrective measures that slow or reverse a varation from the normal value of a factor Homeostatic control mechanism receptor (sensor) detects change and sends the information to the control center control center compares information from receptors to set point (normal value) sends signal to effector effector carries out selected response muscle or gland Nervous System = integrates and coordinates many of the body's activities 2 primary divisions Central Nervous System (CNS) brain and spinal cord Peripheral Nervous System (PNS) all nervous tissue outside the CNS
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This note was uploaded on 04/08/2009 for the course BIO 309D taught by Professor Jessicawandelt during the Spring '08 term at University of Texas at Austin.

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march 3 - March 3 Bio Skin Derivatives many diverse...

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