Stretch receptors in skeletal muscle provide a mechanism to maintain sensibility of the receptor during muscle length changes. The stretch receptor organs have intrinsic muscle fibers that are innervated by gamma efferent motor neurons in the ventral horn that receives input from descending spinal cord axons.

• Stretch receptors in skeletal muscle provide a mechanism to maintain sensibility of the receptor during muscle length changes. The stretch receptor organs have intrinsic muscle fibers that are innervated by gamma efferent motor neurons in the ventral horn that receives input from descending spinal cord axons.

• Gamma motoneurons- Efferent axons from ventral horn neurons to an intrafusal muscle of the stretch receptor re-adjust length of the detector. This resets the tension on the muscles to control the contraction length.

• A gamma efferent innervates intrafusal muscle fibers adjusting the sensors length as the stretch receptor tension within the somatic muscle.