Lab 4: Sensory Systems

Feb 3rd, 2012
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Human Physiology Lab Lab 4: Memory Worksheet with answers + PhysioEx 9.0 Six (6) pages

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Human Physiology Lab - Zoology 2200L Lab 4 Reflexes and Sensory System Name: Nicole ValenzuelaYou will be completing a number of activities in this lab to demonstrate reflexes and the sensory system. You do not have to perform the tasks in any particular order but make sure that you complete each of the following tasks. Also your data from activity 4 needs to be uploaded to the Lab 4 supertaster data drop box by midnight on Thursday for 1 point.Activity 1: Initiating a stretch reflex pg. 2Activity 2: Testing reaction time for basic and acquired reflexes pg. 3Activity 3: Determining two-point threshold pg. 4Activity 4: Supertasters pg. 5-6Reflexes Reflexes are rapid involuntary responses to stimuli. All reflexes have five essential components. The receptor, the sensory neuron, the integration center, the motor neuron and the effector. Fill in the role of each component of a reflex arc: Receptor: The receptor at the end of a sensory neuron reacts to a stimulus.Sensory neuron: Sensory or afferent neuron conducts nerve impulses along an afferent pathway towards the central nervous system.Integration center: The integration center consists of one or more synapses in the central nervous system.Motor neuron: The motor or efferent neuron conducts a nerve impulse along an efferent pathway from the integration center to an effector.Effector: An effector responds to the efferent impulses by contracting, if the effector is a muscle fiber, or secreting a

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