Autonomic Nervous System

    Cards (9)

    • Preganglionic neurones of the SNS are located in the intermediolateral cell column of the thoracolumbar spinal cord (T1-L3)
    • Preganglionic neurones synapse (acetylcholine) onto postganglionic sympathetic neurones in the paravertebral and prevertebral ganglia
    • Noradrenaline is the neurotransmitter at all target tissues except for the sweat glands (ACh)
    • The parasympathetic nervous system has two divisions, cranial and sacral
    • Preganglionic neurones of the parasympathetic nervous system are located in the intermediolateral cell column of the sacral spinal cord (S2-S4) and the brainstem nuclei of cranial nerve III, VII, IX and X
    • Cranial nerve X is the vagus nerve, responsible for >70% of function
    • Preganglionic neurones sypanse (acetlycholine) onto postganglionic parasympathetic neurones in ganglia close to the target tissue (PNS)
    • PNS, ACh is the neurotransmitter at all target tissues
    • PNS vs SNS
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