<prompt> Golgi tendon apparatus conveys message to cns, depends uponTension in muscleLength of muscleRapaidity of contractionBlood supply  <response>: The Golgi tendon organ GTO also called Golgi organ, tendon organ, neurotendinous organ or neurotendinous spindle is a proprioceptive sensory receptor organ that senses changes in muscle tension. It lies at the origins and inseion of skeletal muscle fibers into the tendons of skeletal muscle. It provides the sensory component of the Golgi tendon reflex.Ref: Ganong;s review of medical physiology 23rd edition Page no: 162 