Biolog 34 - Chapter 34 Neural Control I Functions of the...

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Chapter 34: Neural Control I. Functions of the Nervous System Receive sensory input from internal and external environments Integrate the input Respond to stimuli II. Sensory Input Receptors are parts of the nervous system that sense changes in the internal or external environments. Sensory input can be in many forms, including pressure, taste, sound, light, blood pH, or hormone levels that are converted to a signal and sent to the brain or spinal cord. III. Integration and Output In the sensory centers of the brain or in the spinal cord, input is integrated and a response is generated. Motor output is a signal transmitted to organs than can convert the signal into some form of action, such as movement, changes in heart rate, release of hormones, etc. IV. Divisions of the Nervous System The nervous system monitors and controls almost every organ system through a series of positive and negative feedback loops. The Central Nervous System (CNS) includes the brain and spinal cord.
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This note was uploaded on 12/03/2011 for the course CHEM BIO P 101 taught by Professor Kk during the Spring '11 term at Rochester.

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Biolog 34 - Chapter 34 Neural Control I Functions of the...

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