Review of Chapter 8 homework
Review of Chapter 8 homework BIOL 3160
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80887 - BIOL 3150 - 001
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This page Class Notes was uploaded by MBattito on Monday February 15, 2016. The Class Notes belongs to BIOL 3160 at Clemson University taught by Dr. Tamara McNutt-Scott in Fall 2015. Since its upload, it has received 28 views. For similar materials see Human Physiology in Biological Sciences at Clemson University.
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Date Created: 02/15/16
1 What type of information do ascending tracts carry How about descending tracts Ascending tracts are sensory tracts they deliver information to the brain begins with some sort of sensory element and ow up through series of neurons and go to cerebrum sensory cortex Descending tracts are motor tracts and deliver information to the periphery 2 Do all nerve fibers decussate in the medulla Can you explain how a person with lesions in the left hemisphere often have impaired motor activity in both hands No not all nerve fibers decussate in the medulla they can decussate in spinal cord or not at all 0 Left hemisphere controls right side however can indirectly control left hand through projection neurons through corpus callosum 0 Left hemisphere specialized for skilled motor activity for both hands 0 Hemispheric lateralization 3 Does initiation of a skeletal muscle event involve just activation of the motor area of the cerebral cortex No it involves the posterior parietal cortex as well 0 Involved in transforming visual information into motor commands Pre motor cortex 0 Sensory guidance of movement and controls the more proximal muscles and trunk muscles of the body Supplementary motor area 0 Complex movements and coordination of two handed movements 4 Define what is meant by the peripheral nervous system Part of the nervous system that consists of the nerves and ganglia on the outside of the brain and spinal cord Anything outside of the CNS 5 Describe the function of each component Is the brain directly involved with the body s response to sensory stimulation Know the five parts of the re ex arc Sensory structure Afferent sensory neuron Integration Center interneuron to help process MotorEfferent pathway send out signal 0 Effector tell muscle what to do Brain is told what response the re ex arc does not direct it but makes it aware of it 0000
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