Pelvic V, N, L Flashcards
3 branches of the abdominal aorta?
common iliacs
ovarian aa
median sacral a
Common iliac –> ?
bifurcates @ L5-S1 IV disc, to:
external iliac –> femoral a
internal iliac a –> branches supply pelvic viscera and perineum
3 branches of the POSTERIOR division of the internal iliac artery?
- iliolumbar a
- lateral sacral aa
- superior gluteal a
iliolumbar a supplies what 4 structures?
- iliacus
- psoas major
- quadratus lumborum
- cauda equina in vertebral canal
The lateral sacral aa supplies 1. _______, then enters the anterior sacral foramina to supply the structures of the structures of sacral canal, 2. and 3. _______. They eventually exit the posterior sacral foramina to supply the 4. ______ and 5. _____.
- piriformis
- spinal meninges
- roots of sacral spinal nn
- erector spinae
- skin covering dorsal sacrum
superior gluteal a supplies what 3 structures?
And exits what structure?
- piriformis
- gluteal muscles
- tensor fascia lata
exits greater sciatic foramen
9 branches of the ANTERIOR division of the internal iliac a?
- umbilical a (obliterated after birth) and superior vesical a (same trunk)
- obturator a
- accessory obturator a
- inferior vesical a (male)
- uterine a
- vaginal a
- middle rectal a
- internal pudendal a
- inferior gluteal a
The superior vesical branches of the umbilical a supply what?
urinary bladder
The obturator a supplies 1 _____ and 2 _____, then leaves the pelvic cavity via the obturator canal to supply 3 _______.
(the first and third are general)
pelvic muscles
head of femur
medial thigh
The inferior vesical a (males) supplies what 4 structures?
urinary bladder
ureter
prostate
seminal vesicles
The uterine artery supplies what 5 structures of the F repro system?
uterus ligaments of uterus uterine tube ovary superior vagina
In addition to the rectum, the middle rectal artery supplies what 2 structures M/1 structure F? (male repro system; female repro system)
seminal vesicles, prostate
vagina
The internal pudendal a exits the pelvis via the greater sciatic foramen and loops around the spine of the ischium, to supply what?
perineum
What 5 structures does the inferior gluteal a supply? (the first is general)
pelvic muscles priformis quad femoris gluteus max sciatic n
Superior rectal artery….
- …is a branch off of what artery?
- Divides where?
- supplies down to what structure?
- branch of inferior mesenteric a
- divides at S3
- supplies down to the internal anal sphincter
pelvic venous plexuses drain into what 3 veins?
tributaries of internal iliac, inferior mesenteric, and lateral sacral
**venous plexuses are assoc w/ pelvic viscera
Describe the internal iliac veins in terms of:
- where the form in relation to the greater sciatic foramen
- where they sit in relation to their arteries
- what spinal level the common iliac veins merge to form the inferior vena cava
- form superior to GSF
- sit postero-inferior to the arteries
- merge at L4/L5 –> IVC
The lateral sacral veins anastomose with __________ to provide a collateral pathway to reach either the ____ or the ____.
internal vertebral plexus
IVC
SVC
The lateral sacral veins provide a metastatic pathway for _________ (M or F) cancer cells to the _____ or _____.
prostate or ovarian cancer cells
to the vertebrae OR the cranial cavity
The superior rectal vein is a tributary of what vein?
inferior mesenteric v
What structure do the testicular veins exit?
Exit the deep inguinal ring
and they traverse the pelvic cavity to travel to their terminations
What 4 groups of LN drain the pelvic viscera?
- external iliac
- internal iliac
- sacral
- common iliac
External iliac LN:
- receive from?
- drain into?
receive from inguinal LN; superior parts of middle to anterior pelvic organs
drain into common iliac LN
internal iliac LN:
- receive from?
- drain into?
receive from inferior pelvic viscera, deep perineum, gluteal region
drain into common iliac LN
