Muscle Spindles

Muscle Spindles MUSCLE SPINDLES Are “Stretch receptor” located within a muscle. Yet found, intermingling with muscle fibers. ‘Intrafusal fibers’ – Specialized muscle fibers seen within spindle  (Note: – Fusus refers to spindle). Distinguished from fibers of muscle itself (“Extrafusal fibers”)  DIVISIONS OF INTRAFUSAL FIBERS: Central/equatorial part. Peripheral part. Central/equatorial region: Does not contain any contractile protein. Hence, non-contractile portion of muscle spindle. Are more sensitive to stretch & acts […]