Stretch Reflex

Annmarie Johnson A&P I July 25, 2012 Stretch Reflex and the involuntary offensive System (A) The blossom forth involuntary is the dead bodys solution to a quick vim crane. The revive at which the stretch occurs leave behind stimulate receptors locate within skeletal bodybuilderbuilder called muscle arbor fibers. If the stretch is slow, these receptors ar not stimulated. The muscle spindle plays an active habit in the stretch reflex. The stretch reflex is an involuntary answer (contraction) to external stimuli that stretch the muscle. When the spindle is stretched it sends turn up a foretell to the spinal cord, which in turn sends a signal back to the muscle causing it to contract. The strength of the response of the muscle spindle is determined by the consider of stretch. This nitty-gritty the greater and more than pronto a load is employ to the muscle, the more forceful the muscular contraction will be. Muscles a nd tendons are quickly stretched creating and then storing elastic energy.  Immediately following the stretch, a coaxal muscle contraction releases the stored energy.  This is considered to be ensueant from a serial elastic component (SEC) which causes the muscle to act ilk a stretched spring wanting to return to its original length.

  As a number the SEC contributes to the total force produced by course returning the muscles and tendons to the length prior to the stretch.  If an eccentric variety lasts alike long or requires a greater bowel front in the joint, the stored energy is diminished. (Baechle, T. R. & Earle, 2000) When jumping up in the air! , chair executive is improved with a countermovement prior to the jump. If the countermovement was performed slowly or a pause was implemented at the bottom of the countermovement, the result would be decreased power. Stimulation of the muscle spindle fibers result in a reflex loop that stimulates muscle contraction. As the muscle is stretched, receptors in the muscle (muscle spindle fibers) interpret the rate of stretch within the...If you want to get a beat essay, monastic order it on our website: BestEssayCheap.com

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