propreoception from the limbs and lower trunk

propreoception from the limbs and lower trunk - Spinal Cord...

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Spinal Cord * propreoception from the limbs and lower trunk Dorsal Column * first order- sensory receptor to cuneate nucleus and gracile nucleus in medulla, ipsilateral side * second order- descussate and form the medial lemniscus (midline ribbon), tract that leads to thalamus * third order- from thalamus to contralateral sensory cortex Anterolateral System * Spinothalamic tract- pass up the anterior lateral columns of the cord * carries signals for pain, temperature, pressure, tickle, itch, and light or crude touch * first order neurons enter dorsal horn, synapse and desussate to form the ascending spinothalamic tract from second order neurons Anterolateral System Dorsal spinocerebellar tracts * proprioceptive system of the afferents from muscle spindles, Golgi tendon organs, and joint receptors. * joins the discriminative touch system, in the posterior columns, for a few segments. * slips out of the dorsal white matter, synapses and second order fibers ascends without crossing
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propreoception from the limbs and lower trunk - Spinal Cord...

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