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Sensitive to changes in muscle length they alsp get

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Unformatted text preview: tell brain about self • Muscle spindles (4-10mm) iullongated fibers-- – parallel to skeletal muscle fibers. – sensitive to changes in muscle length; – they alsp get an input from the brain--aka gamma motor neuron--they allow the muscle to adjust sensativity by the brain. intra fusal fibers dont do force extrafusal do bitch -motoneurons allow the CNS to adjust sensitivity spindle. • Golgi tendon organs – serial to skeletal muscle fibers, located at junction of muscle and tendon. – sensitive to changes in tension; 54 KNES 462 connected in series ©FK ‘08 KNES 462 in the muscle the incoming highway meets the outgoing highway Afferent meets efferent system • receptors inform the spinal cord/brain about the ‘state of affairs’ in a particular organ / tissue / effector • -motoneurons innervate receptors embedded in the muscle fibers, called muscle spindles. 56 Spinal cord / brain feedback loop Receptor KNES 462 ©FK ‘08...
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This document was uploaded on 03/19/2014 for the course KNES 462 at Maryland.

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