Pelvic Arteries Flashcards
What is the main artery of pelvis?
internal iliac a
internal iliac a indirectly supplies what regions?
gluteal, medial thigh and perineum
the internal iliac a branches from?
common iliac a - which branches from abdominal aorta
What are the two normal divisions for the internal iliac a
anterior and posterior
What are the branches that come off the anterior division of internal iliac a
- umbilical a
- obturator a
- inferior vesicle (male only)
- uterine a (only females)
- vaginal a (only in females)
- middle rectal a
- internal pudendal a
- inferior gluteal a
where do you find the umbilical a?
between urinary bladder and lateral wall of pelvis
What branch does the umbilical a give off?
superior vesicle a - goes to bladder
prenatally the umbilical a carries blood from the fetus that is ?
deoxygenated
postnatally the umbilical a atrophies and becomes ?
medial umbilical lig
Where does the obturator a arises close to?
origin of umbilical artery
The obturator a passes along the lateral wall of pelvis to what area?
obturator canal –> exits pelvis at this canal with the obturator VN
What does the obturator a supply?
muscles of medial thigh, also provides small branches to ilium and pubis
Can the obturator a originate elsewhere than the internal iliac a
yes can originate from external iliac a or inferior epigastric a
What does the inferior vesical a supply?
inferior surface of urinary bladder, seminal vesicles and prostate, may also provide branch to ductus deferens
What is the male homologue to the uterine a?
is artery to ductus deferens
What does the uterine a supply?
present only in females, supplies uterus, cervix and superior parts of the vagina
What is the male homologue to the vaginal a?
inferior vesical a
What does the vaginal a supply?
numerous branches to anterior/posterior surfaces of vagina
- also supplies inferior surface of urinary bladder and pelvic urethra
what does middle rectal a supply?
inferior part of rectum, seminal vesicles and prostate in males or vagina in females
What does middle rectal a anastomose with?
superior and inferior rectal a
where does the internal pudendal a exit the pelvis?
thru the inferior part of greater sciatic foramen –> passes over sacrospinous lig and then thru lesser sciatic foramen
What nerve runs with internal pudendal a?
pudendal n in pudendal canal
What does the internal pudendal a supply?
primary arterial supply to perineum and external genitalia; larger in males
the internal pudendal artery gives off what branch?
inferior rectal a
Inferior gluteal a - where does it pass/between what ventral rami?
passes posteriorly usually between S2 and S3 ventral rami
Where does the inferior gluteal a exit the pelvis?
passing thru inferior part of greater sciatic foramen, exits infeiror to piriformis m
What does the inferior gluteal a supply?
lower gluteal muscles and upper posterior thigh muscles
What are the branches off the posterior division of the internal iliac a?
iliolumbar a, lateral sacral a, superior gluteal a
How does the iliolumbar a run?
superolateral (recurrent) to iliac fossa where it divides
What are the branches of the iliolumbar a?
iliac branch, lumbar branch
What does the iliac branch of the iliolumbar a supply?
iliacus m
What does the lumbar branch of the iliolumbar a supply?
psoas major and QL
What does the lateral sacral artery supply?
spinal meninges around roots of sacral nerves, and supply skin and deep muscles overlying posterior aspect of sacrum
What does the superior gluteal supply?
upper gluteal muscles and TFL
Where does the superior gluteal a pass?
between lumbosacral trunk and S1 ventral ramus
Where does the superior gluteal a exit the pelvis?
by passing thru the superior part of greater sciatic foramen, exits superior to piriformis m
Where does the ovarian a branch from?
abdominal aorta inferior to renal artery
Is the ovarian a retroperitoneal ?
yep,
Is the ovarian a post or ant rto ureter?
anterior, to which it supplies blood
In pelvis the ovarian a passes medially thru which structure?
suspensory lig of ovary
What does the ovarian a supply?
ovary and uterine tube and anastomoses with uterine a
What does the ovarian a anastomose with?
uterine a
Where does the testicular a branch from?
abdominal aorta inferior to renal a
is the testicular a retroperitoneal?
yep
Is the testicular a anterior to the ureter?
yes
Where does the testicular a enter?
deep inguinal ring and then passes thru inguinal cnal to scrotum
What does the testicular a supply?
testis and epididymis
Where does the median sacral artery arise?
from posterior surface of abdominal aorta just superior to bifurcation
Where is the median sacral artery located?
anterior to lower lumbar vertebrae, sacrum and coccyx
What artery represents the caudal end of embryonic dorsal aorta?
medial sacral artery
What is the terminal branch of the inferior mesenteric a?
superior rectal a
What does the superior rectal a supply?
superior part of rectum, sorry duh but I’m thorough
