proprioception
Receptors in the joints, muscles, and tendons help people know where their bodies are in space
Golgi tendon organ
are at the junction of muscle and tendon and respond to mechanical stress such as pressure or muscle tension.
Muscle spindles
are sensory receptors within the belly of a muscle that primarily detect changes in the length of this muscle (stretch).
Muscles responsible for fine movements contain more muscle spindles than muscles responsible for gross movements.