Neurology

Question 1

Lumbar Plexus

Nerves (4) and Roots

Answer 1

Ilioinguinal N L1
Anterior Scrotal/Labial N.

Genitofemoral N L1-L2

Obturator N L2-L4

Lumbosacral Trunk L4-L5

Question 2

Sacral Plexus

Nerves (9) and Roots

Answer 2

Sciatic N L4-S3
Superior Gluteal N L4-S1
Inferior Gluteal N L5-S2
N. to Quadratus Femoris L4-S1
N. to Obturator Internus L5-S2
N. to Piriformis S1-S2
Posterior Femoral Cutaneous N S1-S3
Pudendal N S2-S4
Anterior Rami of 1st-4th Sacral Spinal Ns.

Question 3

Pudendal Nerve Branches (4)

Answer 3

Inferior Rectal N
Dorsal N. of Penis/Clitoris
Superficial Perineal N
   Posterior Scrotal/Labial N
Deep Perineal N

Question 4

Coccygeal Plexus

Nerves and Roots

Answer 4

N. to Levator Ani M S4

N. to Coccygeus M S4-S5

Question 5

Superior Hypogastric Plexus

Supply and Functions

Answer 5

Only Sympathetic
Inferior Mesenteric Plexus
Lumbar Splanchnic Ns

Makes Hypogastric Ns. for Inferior Hypogastric Plexus

Question 6

Inferior Hypogastric Plexus

Supply and Functions

Answer 6

SNS: Hypogastric Ns. and Sacral Splanchnic Ns
PSNS: Pelvic Splanchnic Ns

Innervates Descending/Sigmoid Colon and Internal Anal Sphincter
Makes Vesical and Uterovaginal/Prostatic Plexuses

Question 7

Vesical Plexus

Supply and Functions

Answer 7

Mixed Supply from Inferior Hypogastric Plexus

Innervates Detrusor Muscle and Internal Urethral Sphincter

Question 8

Uterovaginal Plexus

Supply and Functions

Answer 8

Mixed Supply from Inferior Hypogastric Plexus

Innervates Uterus, Uterine Tubes, Bulbs of Vestibule, Clitoris and Vestibular Glands

Question 9

Prostatic Plexus

Supply and Functions

Answer 9

Mixed Supply from Inferior Hypogastric Plexus

Innervates Prostate Gland, Erectile Tissue, Ductus Deferens, Ejaculatory Duct and Seminal Vesicles