lab_3_discussion - Lab Exercise 3 Discussion Questions...

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Lab Exercise 3 Discussion Questions Human Reflexes 1. Define reflex . A patterned, involuntary response to stimulus. Response is graded. Diagram the components of a reflex arc . Stimulus hits sensory receptor which activates afferent neuron, going to interneurons (integrator), which goes to efferent nervers, and finally to effector to response. Are all reflexes considered unlearned responses? No. Some of them can be learned like guitar playing. Why or why not? 2. Distinguish functionally and anatomically between monosynaptic and multi-synaptic reflexes . 1 direct synapse between afferent and efferent nerve. Multi –synapse has multiple synapses between afferent to efferent. Slower. Into which category does the H- reflex fit? Monosynaptic. Diagram the specific components of the H-reflex. Direct stimulation of tibial nerve to 1A afferents to dorsal root of spinal cord integration to 1a axons to make a monosynaptic connection to alpha motor neuron (efferent) to activated alpha motor neuron causing contraction to muscle. Diagram the monosynaptic reflex that is seen in skeletal muscle. Diagram and explain what occurs in the antagonistic muscle. An "antagonist" is a classification used to describe a
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This note was uploaded on 06/23/2010 for the course NPB 101L taught by Professor Goldberg during the Spring '08 term at UC Davis.

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lab_3_discussion - Lab Exercise 3 Discussion Questions...

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