Kinesiology 1080A/B Lecture Notes - Lecture 3: Multiple Sclerosis, Upper Motor Neuron, Amyotrophic Lateral Sclerosis

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 1080A/B
• Professor: Matthew Heath

Document Summary

Reciprocal innervation/inhibition: first understood by cs sherrington, suppresses activity of an antagonist muscle when agonist active, explains phenomenon such as walking and reaching, final common path at the spinal cord produce muscular contraction. Extrafusal muscle fibres: causes contraction through a force. Intrafusal muscle fibres: lie inside, provide positional information, convey stretch info to spinal cord. Ie man with cerebellar lesion, could not coordinate behavior. Ie lady with parietal lesion, could not write name. Hemiparesis: motor region of brain is reversed with muscles in body (left side controls right, etc) Cocontraction: loss of reciprocal innervation (agonist/antagonist contract simultaneously) Physical education: franklin m. henry movements, examined whole body movements and developed experimental approaches to understanding how we (cid:498)learn(cid:499) to produce complex, developing techniques that maximize rates of people"s motor skills, interested in gross motor skills learning. Pns: somatic, autonomic: somatic: intrafusal muscle fibres. Neuron: building block of the cns: heavily myelin in neurons equals rapid conduction times, myelin is fat around neurons.