8: Pelvic Angiology And Neurology

Question 1

Two branches from the ovarian A

Answer 1

Ovarian branches, tubal branches

Question 2

When does the external iliac A become the femoral A

Answer 2

Distal to the inguinal L

Question 3

Branches from the external pudendal A

Answer 3

Anterior scrotal/Latvian A

Question 4

Obturator A supplies?

Answer 4

Pelvic muscles, ilium, femoral head, medial thigh muscles

Question 5

Inferior vesical A supplies?

Answer 5

Seminal vesicles, prostate, ductus deferents, ureters, bladder

Question 6

Inferior vesical A is analogous to what A in females?

Answer 6

Vaginal A

Question 7

Two branches of the inferior vesical A in males?

Answer 7

Prostatic branch, A to ductus deferens

Question 8

What does uterine A travel in?

Answer 8

Broad Ligament of the uterus

Question 9

What is the uterine A homologous to in males?

Answer 9

Artery of the ductus deferens

Question 10

Three branches of the uterine A

Answer 10

Vaginal branch, ovarian branches, tubal branches

Question 11

What does the inferior gluteal A supply?

Answer 11

Coccygeus, levator ani, piriformis, quadratus femoris, posterior thigh, gluteus maximus

Question 12

Internal pudendal A path

Answer 12

Exits pelvic cavity through greater sciatic foramen -> enters back through lesser sciatic foramen -> pudendal canal

Question 13

Lateral sacral A sends branches where?

Answer 13

Into the ventral sacral foramina

Question 14

Three venous plexuses to note

Answer 14

1. Pampiniform venous plexus
2. Internal rectal venous plexus
3. External rectal venous plexus

Question 15

Internal hemorrhoids

Answer 15

Prolapse of mucosa containing internal rectal venous plexus (AKA piles)

Question 16

External hemorrhoids

Answer 16

Produced by blood clots in external rectal venous plexus, which bulge out of mucosa and are painful

Question 17

Four parts of the lumbar plexus that are relevant in the pelvis

Answer 17

1. Ilioinguinal N
2. Genitofemoral N
3. Obturator N
4. Lumbosacral trunk

Question 18

Obturator N levels

Answer 18

L2-4

Question 19

Obturator N supplies?

Answer 19

Medial thigh muscles

Question 20

Superior gluteal N innervates?

Answer 20

Gluteus medius and minimus

Question 21

Inferior gluteal N supplies?

Answer 21

Gluteus maximus

Question 22

Deep perineal N supplies?

Answer 22

Superficial and deep transverse perineal muscles, ischiocavernosus, bulbospongiosus, vaginal vestibule

Question 23

Coccygeal plexus levels

Answer 23

S4-5

Question 24

Three nerves from the coccygeal plexus

Answer 24

1. Anococcygeal N -> cutaneous
2. N to levator ani
3. N to coccygeus

Question 25

Path of visceral sensory fibers

Answer 25

Accompany parasymp fibers of pelvic splanchnics -> ventral rami of sacral spinal N’s -> dorsal root -> DRG -> synapse in dorsal horn of spinal cord

Question 26

Part of the periarterial plexus from the inter mesenteric plexus

Answer 26

Ovarian plexus

Question 27

Where is the superior hypogastric plexus?

Answer 27

Anterior to bifurcation of abdominal aorta

Question 28

Inferior hypogastric plexus function to the rectum and anal canal (symp vs parasymp)

Answer 28

Symp: contracts internal anal sphincter
Parasymp: inhibits contraction of internal anal sphincter

Question 29

Cavernous N’s of the uterovaginal plexus

Answer 29

Parasymp to bulbs of vestibule, clitoris, vestibular glands

Question 30

Visceral sensory fibers of the fundus/body of uterus vs cervix/upper vagina

Answer 30

Fundus/body: accompany symp fibers of uterovaginal plexus through the autonomic plexuses and rami communicants
Cervix/upper vagina: accompany parasymp fibers of uterovaginal plexus through pelvic splanchnic N’s into sacral part of SC