Pelvic Nerves and Vessels Flashcards by Courtney @Brainscape

Q

Sacral Plexus

A

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Q

Sciatic Nerve

Root value and supply to

A

L4,L5, S1-3

Posterior compartment of thigh and branches supply all the muscles of the leg/foot

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Q

Gluteal Nerves

Superior root value and supply

A

L4,L5,S1

Gluteal to gluteus medius and minimus

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Q

Gluteal Nerves

Inferior root value and supply to

A

L5, S1, S2

Gluteal to gluteus maximus

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Q

Nerve to obturator internus

Root value

A

Direct L5-S1

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Q

Nerve to piriformis

Root value

A

Direct from S1-2

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Q

Levator Ani

Innervation

A

Direct S4 and pudendal

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Q

Coccygeus

Innervation

A

Direct S4, S5

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Q

Pudendal nerve

Root value and supply to

A

S2-S4

Motor and sensory to levator ani, external anal and urethral sphincters, bulbospongosius and ischiocavernosus

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Q

Pudendal nerve route

A

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Q

Mesenteric and Hypogastric Plexuses

A

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Q

Sympathetic innervation to… does what?

Rectum

A

Decreases movement

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Q

Sympathetic innervation to… does what?

Internal anal and urethral sphincters

A

Contract

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Q

Sympathetic innervation to… does what?

Bladder detrusor

A

Relaxed

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Q

Sympathetic innervation during… does what?

Ejaculation

A

Contracts ductus deferens and seminal vesicles

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Q

Sympathetic innervation to… does what?

Uterus

A

Relaxes/contracts (hormonal)

Q

Sympathetic innervation to… does what?

Arteries

A

Vasoconstriction

Q

Parasympathetic innervation to pelvis

Supplied by

A

Pelvic splanchnic nerves S2-4

Q

Parasympathetic innervation to… Does what?

Rectum and anal canal

A

Increases motility

Q

Parasympathetic innervation to… Does what?

Internal anal sphincter

A

Relaxed

Q

Parasympathetic innervation to… Does what?

Bladder

A

Contracts detrusor, inhibits contraction of internal sphincter

Q

Parasympathetic innervation to… Does what?

Seminal vesicles, ductus deferens, uterus

A

Nothing

Q

Parasympathetic innervation to… Does what?

Arteries

A

Vasodilation -> erection

Q

Nerve supply to male perineum

A

Q

Nerve supply to female perineum

A

Q

Blood supply to pelvis

Comes from

A

Internal iliac arteries, which are brancehs of the common iliac arteries, which branch from the aorta at L4. Each internal iliac artery branches into an anterior and posterior division.

Q

Branches of anterior internal iliac

A

Q

Anterior internal iliac in males

A

Q

Anterior internal iliac for females

A

Q

Posterior internal iliac

A

Q

Blood supply to pelvic organs

A

Q

Internal iliac veins

A