b) Joint Kinesthetic Receptors
Kinesthetic: the perception of body movements.
There are several types of joint kinesthetic receptors in and around articular capsules of synovial joints. Free nerve endings and Ruffini Corpuscles in the capsules respond to pressure. Small Pacinian corpuscles in the connective tissue outside of the capsule respond to acceleration and deceleration of joints during movement. Articular ligaments contain receptors similar to GTOs that adjust reflex inhibition of the adjacent muscles when there is excessive strain on the joint.
Peripheral Nervous System
Peripheral nerves transmit both somatic & autonomic, sensory & motor information. Peripheral nerves consist of both cranial & spinal nerves. They both perform the same function; they differ in anatomical location. Each spinal nerve is attached to the spinal cord by dorsal & ventral roots. Dorsal branches contain sensory neurons while ventral branches contain motor neurons. This information is to & from the body. Cranial nerves exit and enter the CNS in the brainstem and carries information to & from the head. Some cranial nerves carry sensory information only (CN I, II, VIII) while others carry only motor information (CN III, IV, VI, XI, XII) while others will be mixed (CN V, VII, IX, X) meaning they carry both sensory & motor.
177
Made with FlippingBook Publishing Software