Gross (02.27) Pelvic Neurovasculature Flashcards
what does the aorta split into?
common iliac aa
what do the common iliac aa split into?
- external iliac a
- internal iliac a
what does the external iliac a do?
exits pelvis as femoral aa
what does the internal iliac a do?
enters true pelvis and branches
-supplies pelvic organs and gluteal region
how many branches are there of the internal iliac a?
7
- 3 posterior
- 7 anterior
the iliolumbar a (branch of internal iliac) is between the ___ ___ and ____. it supplies the ____ ____ and ____
- iliac crest
- L5
- MEDIAL ilium
- L5
the lateral sacral a (branch of internal iliac) enters the ___ ____ foramina and supplies the ____ and ___ ____ nn
- ventral sacral
- sacrum
- ventral sacral nn
the superior gluteal a (branch of internal iliac) is between ____ and _____. it enters the ___ ____ superior to ____m.
- L5
- S1
- gluteal region
- piriformis m
the superior gluteal a supplies the ____ mm with the ___ ___ nn then exits the ____ foramen
- gluteal mm
- superior gluteal nn
- sciatic
the inferior gluteal a (branch of internal iliac) is between ___ and ____ inferior to ____ m
- S2
- S3
- piriformis m
the inferior gluteal m supplies the _____ mm with the ____ _____ nn
- gluteal mm (like superior gluteal)
- inferior gluteal nn
both the superior and inferior gluteal aa exit the pelvis via ____ ____ ____
greater sciatic foramen
the internal pudenadal a runs with the _____ n and exits the pelvis through ____ ____ foramen before entering the gluteal region ______ to piriformis m
- pudendal n
- greater sciatic
- inferomedial
the internal pudendal a crosses over the _____ _____ and re-enters pelvis through the ____ ____ foramen to supply the ____ and _____ ____
- sacrospinous ligament
- lesser sciatic
- UG
- anal triangles
the pudendal canal contains which artery and which nerve?
- INTERNAL pudendal a
- pudendal n
the pudendal canal is formed by the fascia of ____ ____ m and runs anteriorly along the _____ ____ to supply ____
- obturator internus m
- ischiopubic ramus
- UG
the umbilical a runs towards the _____ abdominal wall and sends off 3-4 _____ ____ aa to the _____ before it terminates as the _____ ____ ligament
- anterior
- SUPERIOR vesical aa
- bladder
- medial umbilical
the obturator a runs through the _____ _____ and supplies the _____ ____ with the ____ n
- obturator canal
- medial thigh
- obturator n
crown of death
corona mortis (associated with internal iliac a)
the obturator a anastomoses with the _____ ____ vessels. damage to this opens ____ and ____ ____ systems and can cause ____ in minutes
- INFERIOR epigastric
- internal and external iliac systems
- death (crown of death)
the uterine a (in females) anastomoses with the _____ a from the aorta to supply the ____, ____, ___ ___ ____
- ovarian a
- uterus
- cervix
- SUPERIOR vaginal canal
the vaginal a [IN FEMALES] supplies _____ ___, ____ , and _____
(the ureter runs ____ this artery)
- inferior vagina
- bladder
- rectum
-above
the vaginal a [IN MALES] supplies _____ ____ ____, ____ , ____ ____, and _____
(the ureter runs ____ this artery)
- posterior inferior bladder
- ureter
- seminal vesicle
- prostate
-above
the middle rectal a supplies the ___ and anastomoses with the ____ ___ a from IMA and ____ ____ a from internal pudendal a
- rectum
- superior rectal
- inferior rectal
the ureters are inferior to the _____ a and superior to the ____ a [in FEMALES]
- uterine
- vaginal
during hysterectomy, the ____ a is tied off and cut
uterine a
the _____ ____ vv are the venous drainage of the pelvis and form the ____ ___ plexus
- internal iliac veins
- pelvic venous plexus
the pelvic venous plexuses are venous networks that surround what three things?
- bladder
- prostate/uterus
- rectum
the SOMATIC innervation of the sacral plexus is from what three nerves?
- sciatic
- gluteal
- pudendal
____ and ____ form the lumbosacral trunk and cross over the ____ ____
- L4
- L5
- sacral ala
____ emerges ABOVE the periformis m
S1
____ and ____ emerge THROUGH the piriformis m
- S2
- S3
_____- ____ contribute to pudendal n
S2-S4
____ -____ form sciatic and gluteal nn
L4-S3
sympathetic fibers of the PREVERTEBRAL plexus span from ____ -____
T10-L2(3)
the sacral splanchnic nn are _______ fibers that span from ___ - ____
- sympathetic
- S2-S4
the pelvic splanchnic nn are ____ fibers that span from ____ ____
- para-sympathetic
- S2-S4
the superior hypos gastric plexus contains mostly _____ fibers and covers ____ and ____ _____. the plexus condenses to form two ____ nnn
- sympathetic
- aorta
- upper sacrum
- hypogastric nn
the hypogastric n contains mostly ____ fibers and diverges and curves outward bilaterally to ___ to expand to form ___ ____ ___
- sympathetic
- rectum
- inferior hypogastric plexus
the inferior hypogastric plexus contains _____ fibers and covers the ____ ____ bilaterally. is serves as the main ____ ___ of the pelvis
- both (psymp and symp)
- pelvic viscera
- autonomic plexus
the sympathetic chains are ____ to sacral foramen and converge and terminate anterior to coccyx as ____ ____
- medial
- ganglion impar
tiny SYMPATHETIC fibers off sump chain
sacral splanchnic nn
tiny PARASYMPATHETIC fibers off S2-S4
pelvic splanchnic nn
what two types of nerves enter the inferior hypogastric plexus?
- sacra splanchnic
- pelvic splanchnic
sacral and pelvic splanchnic nn are easily injured during ____ surgery or ___ ____ and result in impaired ____ ____ or ____ ____
- rectal
- radical hysterectomy
- bladder control
- sexual function
lymphatic drainage moves ____ to ____ as well as _____ through vessels, nodes, and ____
- superficial
- deep
- superiorly
each organ has its own _____ ____
lymphatic drainage
the RIGHT lymphatic duct drains what 3 things?
- right head and neck
- right upper limb
- right upper thorax
the thoracic duct drains what 6 things
- left head and neck
- left upper limb
- remainder of thorax
- abdomen
- pelvis
- lower limbs
