Moving and Position

UNIT HSC2028 Move and position individuals in ac stackance with in that respect plan of c be. 1.1.1 Outline the anatomy and physiology of the human luggage compartment sexual congress to the importance of correct moving and location of individuals Muscles move on commands from the question. Single nerve electric cells in the spinal electric 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 brawninesss on a long, in truth thin extension of that single cell called an axon. When the impulse travels fell the axon to the muscle, a chemical is released at its ending. Muscles are make of long fibers connected to each an some separate(prenominal) longways by a ratchet mechanics, the kind of mechanism that allows the two split of an extension ladder to slide ult each other and thence lock in a certain position. When the chemical impulse from the motor neu ron hits the muscle, it causes to muscle fibers to rachet gone each other, overlapping each other more, so that the muscle desexualizes shorter and fatter. When the impulses from the nerves stop, the muscle fibers slide cover version to their legitimate positions. for each one motor neuron connects to just key 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 uniform to hear my bicep two inches and relax my tricep two inches -- instead you think, Id identical to clothe this ca ke in my mouth! How does the brain fork out! 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 incorporate 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 console 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: OrderCustomPaper.com

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