Pelvic Vasculature Flashcards
what does the internal iliac artery enter
True pelvis
what does the internal iliac artery supply
pelvic visera and gluteal region
how many branches does the posterior branch of the internal iliac a. have?
3
how many branches does the anterior trunk of the internal iliac a. have in the female?
8
how many branches does the anterior trunk of the internal iliac a. have in the male?
7
what does the internal iliac often look like because it dives into the pelvic cavity
a bulge
small unpaid branch towards the bifurcation of the aorta
median sacral artery
artery between iliac crest & L5that runs superior
Iliolumbar
enters ventral sacral foramina to supply sacrum and sacral n
Lateral Sacral a
Normally lies between L5 and S1
Superior Gluteal a
artery that exits from the greater sciatic foramen
Superior Gluteal a
Normally lies Between S2 & S3
Inferior Gluteal a.
what is the Inferior Gluteal a. inferior to
inferior to piriformis m.
supplies gluteal mm with inferior gluteal nn.
Inferior Gluteal a.
supplies gluteal mm with supr. gluteal nn.
Superior Gluteal a.
artery enters gluteal region superior to piriformis m
Superior Gluteal a.
Exists via the great sciatic and the re-enters via the inferior sciatic foramen
Internal pudendal a.
supplies UG & anal triangle
Internal pudendal a.
supplies external genitalia
Internal pudendal a.
formed by fascia of obturator internus m.
Pudendal Canal
runs anteriorly along ischiopubic ramus
Pudendal Canal
inferior to & supplies pelvic diaphragm
Internal pudendal a.
branch of anterior trunk that is More medial and a little bit anterior than the inferior gluteal
Internal pudendal a.
run towards anterior abdominal wall terminates as medial umbilical ligament
Umbilical a
come off of the umbilical a
superior vesical
runs thru obturator canal
obturator v.n.&a.
becomes the umbilical ligament
Umbilical a
the obliterated umbilical a is found under what fold of the posterior surface of the anterior abdominal wall
medial
artery that supplies the medial thigh
obturator
Obturator anastomoses with inferior epigastric vessels to form
Corona Mortis
why is damage to the Obturator anastomoses with inferior epigastric so critical
early branches off large arteries
ureter runs immediately below this artery in females
Uterine a.
ureter runs immediately above this artery
vaginal a
supplies uterus, cervix & superior vaginal canal
Uterine a.
anastomoses with ovarian a. from aorta
Uterine a.
anastomoses with superior rectal from IMA & inferior rectal from internal pudendal a.
middle rectal
what does the Inferior Vesical a. supply in males
posterior inferior bladder, ureter, seminal vesicle and prostate
what does the vaginal a supply in females
inferior vagina & adjacent bladder and rectum
Is sometimes it own independent branch
Vaginal
supplies middle rectum
Middle Rectal a.
Serves as main autonomic plexus of pelvis
Inferior Hypogastric Plexus
which hypogastric plexus contains both sympathetic & parasympathetic fibers
Inferior Hypogastric Plexus
chains are medial to sacral foramen
Pelvic Sympathetic fibers
converge & terminate anterior to coccyx as ganglion impar
Pelvic Sympathetic fibers
Venous plexuses are all
valve-less
Plexuses intercommunicate via anastomosis prior to forming
named vein
down side of venous plexus
spread of metastasis
All vertebral vessels (axial skeleton vessels) are ..
valve-less
transportation of tumor cells or venous hypertension can spread via
venous plexus anastomosis
Portal anastomoses of the pelvic cavity
Superior rectal - middle & inferior rectal
Where does the superior rectal v drain
inferior mesenteric vein
where do the middle rectal and inferior rectal veins drain
internal iliac vein
Nerves that makes up the sacral somatic innervation
Sciatic & Gluteal nn
Pudendal n.
forms Lumbosacral trunk and crosses over sacral ala
L4-L5
emerges above piriformis m.
S1
Nerves price right through body of piriformis m.
S2-S3
Branches from contributes to pudendal n.
S2-S4
form sciatic & superior and inferior gluteal nn
L4-S3
Exits through the greater sciatic foreman and is located inferior to piriformis muscle
Inferior gluteal n
Exits through the greater sciatic foreman and is superior piriformis muscle
superior gluteal n
The obturator nerve if formed from
L2-L4
a condensation of the fibers between superior and inferior hypogastric plexus
Hypogastric nerve
Are important in moving secretions from the epididymis and associated glands into the urethra to form semen during ejaculation
Sympathetic nerves
Contract smooth m. of the internal urethral sphincter in men and the internal anal sphincters in both men and women
Sympathetic nerves
Contract smooth m. of the reproductive tract and accessory glands of the reproductive tract
Sympathetic nerves
chains are medial to sacral foramen
Pelvic Sympathetic fibers
Pelvic Sympathetic fibers converge & terminate anterior to coccyx as
ganglion impar
each organ has its own
lymphatic drainage
lie along aorta, IVC & iliac vessels
Lymphatics
large dialed lymphatic vessel
Cisterna
Located at the left side root of neck and venous angle
Thoracic duct
lymphatics drains into the venous system from the left head & neck, left upper limbs and remainder of thorax; abdomen, pelvis, lower limbs
Thoracic duct
lymphatics drains into the venous system from the right head & neck, right upper right, and right upper thorax
Right lymphatic duct
