Kinesiology 2241A/B Lecture Notes - Lecture 4: Cerebral Palsy, Proprioception, Glycolysis

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2241A/B
• Professor: Thomas Richard Jenkyn

Document Summary

Neuromuscular aspects of movement: cns composed of brain and spinal cord. Somatosensory cortex located next to the motor cortex, where feelings from your body parts arrive for processing. Origin of afferent nerves: ho(cid:373)u(cid:374)(cid:272)ulus (cid:862)little (cid:373)a(cid:374)(cid:863) larger the area the greater the control. Hand and mouth dominate to interact and control our environment: split into sensory and motor, motor units fibers activated by one motor nerve, fine control muscles may only contain. 10, while powerful muscles may contain 1000s: neuromuscular junction where aps from the brain hit the muscle cell and are amplified. The ap in the muscle can be recorded in two ways: surface emg with skin mounted electrodes, summation of 1000s of aps in the muscle fibers, for example a walking person would constantly be firing and relaxing. Length tension curve - add all those sarcomeres together to make a whole muscle and you add in the elasticity of the perimysium: muscle power muscle force times muscle velocity.