ANATOMY

Detailed explanation-1: -Muscle spindles, the proprioceptors in the muscle, are long proteins that lay parallel to muscle fibers. Proprioception relies on the relationship between the body’s central nervous system and certain soft tissues, including muscles, tendons, and ligaments. Within these tissues are sensory organs called proprioceptors.

Detailed explanation-2: -Muscle spindles are the primary proprioceptive sensory organs and continuously inform the central nervous system (CNS) about muscle length and movement. Accordingly, muscle spindles can be found in almost every muscle. Although they are the most frequently found sense organs in skeletal muscles, they are rather rare.

Detailed explanation-3: -Most vertebrates possess three basic types of proprioceptors: muscle spindles, which are embedded in skeletal muscles, Golgi tendon organs, which lie at the interface of muscles and tendons, and joint receptors, which are low-threshold mechanoreceptors embedded in joint capsules.

Detailed explanation-4: -The most common types of proprioceptors are: muscle spindles, Golgi tendon organs (junction between muscle and tendon), joint receptors, vestibular system, and skin.

Detailed explanation-5: -Receptors involved in proprioception are located in skin, muscles, and joints. Information about limb position and movement is not generated by individual receptors, but by populations of afferents. Afferent signals generated during a movement are processed to code for endpoint position of a limb.