pelvic contents, nerves, & vessels Flashcards
name the structures lining the pelvic inlet
- sacral promontory
- Alae of sacrum
- arcuate line
- pectineal line
- pubic tubercle
- pubic crest
- pubic symphysis
describe the differences between male and female pelvis’s
male
- subpubic angle <90
- sacrum titled forward
- smaller pelvic outlet
females
- subpubic angle >90
- sacrum titled backwards
- bigger pelvic outlet
what ligaments form the greater and lesser sciatic foramen
sacrotuberous & sacrospinous
what travels above piriformis muscle within the greater sciatic foramen
superior gluteal vessels and nerve
what travels below piriformis muscle within the greater sciatic foramen
- inferior gluteal vessels and nerve
- sciatic nerve
- posterior femoral cutaneous nerve
- internal pudendal vessels and nerve
what travels through the lesser sciatic foramen
- internal pudendal vessels
- pudendal nerve (S2-4)
name the branches given off from the anterior division of internal iliac
- umbilical giving rise to superior vesical
- obturator
- inferior vesical giving giving vaginal
- internal pudendal
- inferior gluteal
- middle rectal
what is the main branch coming of the posterior division of internal iliac
superior gluteal
where do all venous plexuses drain to (include the exception to this rule)
internal iliac veins
except: deep dorsal vein of the penis/clitoris
describe the sacral plexus and name its branches
L4, L5, S1, S2, S3, S4
- mostly innervate structures external to the pelvis
- gluteal nerves
- sciatic nerves (L4-S3)
- pudendal nerves (S2-4)
- levator ani
- posterior femoral cutanous
name the branches off the pudendal nerve
- inferior rectal
- perineal
- dorsal nerve to clitoris/penis
- scrotal/labial
name the 2 ANS plexuses and where they’re located
superior hypogastric
- anterior body of L5 & sacral promontory
inferior hypogastric
- pelvic floor
what fibers supply parasympathetic
S2-4 fibers
what fibers supply sympathetic
L1-2
