Proprioceptors - Somatosensory Proprioceptors Provide...

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Somatosensory Proprioceptors * Provide information about mechanical forces arising from with the body (particularly the musculoskeletal system). * Their purpose is to provide detailed and consistent information about the position of the limbs in space. There are three low-threshold proprioceptors: 1) Muscle spindles : * located in skeletal muscle, they are especially numerous in extraocular muscles and intrinsic muscles of the hand and neck. * signal changes in muscle length 2) Golgi tendon organs : * distributed among collagen fibers that form tendons job * inform CNS about changes in mm tension 3) Joint receptors * located in and around joints * gathers info about limb position and joint movement (function is not well understood) Somatosensory System These sensory modalities are lumped into three different pathways in the spinal cord and have different targets in the brain. * Discriminative touch- includes touch, pressure, and vibration perception, and enables us to "read" raised letters with our fingertips, or describe the
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This note was uploaded on 01/30/2012 for the course BSC BSC1085 taught by Professor Sharonsimpson during the Fall '10 term at Broward College.

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Proprioceptors - Somatosensory Proprioceptors Provide...

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