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bild2_2 - BILD 2: Multicellular Life LECTURE #2 [Website:

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BILD 2: Multicellular Life LECTURE #2 [Website: http://www.biology.ucsd.edu/classes/bild2.WI11.1] Instructor: Darwin K. Berg dberg@ucsd.edu
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Figure 48-4 Structure of a vertebrate neuron and a synaptic connection Dendrites Stimulus Nucleus Cell body Axon hillock Presynaptic cell Axon Synaptic terminals Synapse Postsynaptic cell Neurotransmitter
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Figure 48-5 Structural diversity of vertebrate neurons Dendrites Axon Cell body Sensory neuron Interneurons Portion of axon Cell bodies of overlapping neurons 80 ±m Motor neuron
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Figure 49-5 Ventricles, gray matter, and white matter White matter Ventricles Gray matter
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White matter Cell body of sensory neuron in dorsal root ganglion Spinal cord (cross section) Gray matter Hamstring muscle Quadriceps muscle Sensory neuron Motor neuron Interneuron Figure 49-3 The knee-jerk reflex The sensory neurons communicate with motor neurons that supply the quadriceps. The motor neurons convey signals to the quadriceps, causing it to contract and jerking the lower leg forward. 4 Sensory neurons from the quadriceps also communicate with interneurons in the spinal cord. 5
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This note was uploaded on 04/15/2011 for the course BILD 2 taught by Professor Schroeder during the Winter '08 term at UCSD.

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bild2_2 - BILD 2: Multicellular Life LECTURE #2 [Website:

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