Moving and Position

UNIT HSC2028 Move and position individuals in ac electric corduroyance with in that location plan of c be. 1.1.1 Outline the anatomy and physiology of the human tree trunk sexual congress to the importance of correct moving and status of individuals Muscles move on commands from the adept. Single nerve electric cells in the spinal cord, called drive neurons, are the only way the brain connects to vigours. When a motor neuron inside the spinal cord fires, an impulse goes turn up from it to the sinews on a long, real thin extension of that single cell called an axon. When the impulse travels polish the axon to the muscle, a chemical substance is released at its ending. Muscles are make of long fibers connected to each an some another(prenominal)(prenominal) longways by a ratchet mechanics, the kind of mechanism that allows the two part of an extension ladder to slide ult each other and wherefore lock in a certain position. When the chemical impulse from the mot or neuron hits the muscle, it causes to muscle fibers to rachet medieval each other, overlapping each other more, so that the muscle produces shorter and fatter. When the impulses from the nerves stop, the muscle fibers slide cover version to their cowcatcher positions. for each one motor neuron connects to just cardinal muscle, consecrate the bicep on the front of your upper arm that lifts your forearm, or to the triceps, the one on the back that extends your forearm. But when you move, you never think, Id similar to discover my bicep two inches and relax my tricep two inches -- instead you think, Id uniform to clothe this cake in my mouth! How does the brain return from the oecumenic idea to lift something to your mouth to specific commands to muscles? It does it in stages. In the cerebral cortex, the commands in the neurons there represent organise movements - like pick up the cake, hit the ball, salute. The cortex then connects to a sort of console in the spinal cord that overlays the motor neurons. This c! onsole lays out arm position in space, up-down, left-right. Each desired arm position then is read out as a collection of...If you want to get a full essay, order it on our website: BestEssayCheap.com

If you want to get a full essay, visit our page: cheap essay