Bio - Chapter 40

Bio Chapter 40 - Chapter 36 Plant Nutrition 40.1 o o o o o Homeostasis the maintenance of stable conditions in the internal environment Set point

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Chapter 36 – Plant Nutrition 40.1 o Homeostasis – the maintenance of stable conditions in the internal environment o Set point – reference point - desired speed o Feedback information – the reading on your speedometer o Error Signal – the difference between the set point and the feedback info o Effectors – some components of physiological systems – thy effect changes – they are Controlled systems – becaue their activities are controlled by commands from regulatory systems o Regulatory systems – Obtain, process, and integrate information, then issue commands to controlled systems o Sensor – provides the feedback information that is compared to the internal set point o Negative feedback – the most common use of sensory information in regulatory systems Stabilizing influence in physiological systems Returns set point from which it deviated o Positive feedback – seen in some physiological systems; rather than returning a system to a set point, positive feedback amplifies a response
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This note was uploaded on 04/17/2008 for the course BIO 1305 taught by Professor Eldridge during the Spring '08 term at Baylor.

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Bio Chapter 40 - Chapter 36 Plant Nutrition 40.1 o o o o o Homeostasis the maintenance of stable conditions in the internal environment Set point

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