OVCMT, NA- lec. 5

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    Somatosensory Neuronal ArrangementSomatosensory Neuronal Arrangement

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    PC ML Somatic ReceptorsPC ML Somatic Receptors

    discriminative touch stereognosis

    kinesthesia

    vibration

    proprioception

    (conscious)

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    Posterior Column Medial Lemniscus PathwayPosterior Column Medial Lemniscus Pathway

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    Spinothalamic / Anterolateral Somatic ReceptorsSpinothalamic / Anterolateral Somatic Receptors

    pain

    itch, tickle

    temperature

    crude touch

    deep pressure

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    Spinothalamic / Anterolateral PathwaySpinothalamic / Anterolateral Pathway

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    Trigeminothalamic PathwayTrigeminothalamic Pathway

    carries pain, temperature

    and crude touch from the

    face, oral and nasal cavities,

    and teeth CN V (trigeminal nerve) is

    the 1 somatic sensory nerve

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    Spinocerebellar pathwaySpinocerebellar pathway

    proprioception (unconscious)

    motor co ordination

    balance, posture

    pathways are ipsilateral

    anterior and posterior tracts are

    named for their cord location

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    Cerebellar Inputs and OutputsCerebellar Inputs and Outputs