VESICAL PLEXUS

 

DESCRIPTION: This is from the inferior part of the inferior hypogastric plexus. Its branches reach the seminal vesicle, and ductus deferens. Sympathetic fibers are from T11-12 and L1-2, while the parasympathetic are from the pelvic sacral outflow S2-4. Parasympathetic motor function helps to stimulate voiding while the reverse is the case for sympathetic. Parasympathetic fibers stimulate the detrussor muscle and inhibit the sphincter.

BRANCHES:

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To seminal vesicle

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To ductus deferens

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Vesical branches

FUNCTIONAL COMPONENTS:

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GVE sympathetic vasomotor fibers from roots T11-12 and L1-2.

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GVA sympathetic sensory fibers whose cell bodies are placed in the T11-12 and L1-2 spinal ganglia through the thoracic splanchnic nerves and lumbar splanchnic nerves.

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GVE fibers from the parasympathetic sacral outflow S2-S4 called pelvic splanchnic nerves or nervi erigentes

ROOT

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The vasomotor sympathetic fibers originate from the ventral part of the intermediolateral horn of T11-12 and L1-2 spinal cord segments while their sensory branches have their pseudounipolar cell bodies in the spinal ganglia T11-12 and L1-2, and their roots in the dorsal part of the intermediolateral horn of corresponding spinal cord segments.

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 Parasympathetic fibers arise from the ventral aspect of intermediolateral horn of S2-4 spinal cord segments.

 

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Creator: Oluwole Ogunranti


 

 

 

 

 

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