Lec27+2010 - Lecture 27: Neuron physiology and membrane...

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Reading: Chapter 48, pages 1047-1052 Supplements: Web activity 48.1 BioFlix Animation - How neurons work Self Quiz Ch 48: 1, 4 Lecture 27: Neuron physiology and membrane potential Fall 2010, Bio 93, O’Dowd and Warrior, UCI - Copyright: All rights reserved Monday 11/29/10
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Sensor Effector Motor output Integration Sensory input Peripheral nervous system (PNS) Central nervous system (CNS) Information Processing Nervous systems process information in three stages - Sensory input, Integration Motor output Fall 2010, Bio 93, O’Dowd and Warrior, UCI - Copyright: All rights reserved Fig. 48.3
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The Nervous System Nervous systems are made up of essentially the same building blocks - the differences are in how neuronal circuits are organized Fall 2010, Bio 93, O’Dowd and Warrior, UCI - Copyright: All rights reserved CNS consists of the brain and longitudinal nerve cord PNS consists of the nerves that connect the CNS with the rest of the body Fig. 49.4 Study tip: Review nervous system development from Lecture 26
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A Simple Nerve Circuit – the Reflex Arc. A reflex is an automatic response. Fall 2010, Bio 93, O’Dowd and Warrior, UCI - Copyright: All rights reserved Fig. 49.3 extends leg outward - activated as part of reflex flexes leg inward - inhibitied as part of reflex
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Neuron Structure Neurons are the structural and functional units of the nervous system. A typical neuron has a cell body, and two types of
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Lec27+2010 - Lecture 27: Neuron physiology and membrane...

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