nerves, BV and lymphatics of pelvis Flashcards
What is the root value of the pudendal nerve
S2-S4
What are the motor and sensory functions of the pudendal nerve
Motor:
- Skeletal muscles of the perineum including external urethral and anal sphincters
- Levator Ani
Sensory:
- most skin of perineum
What does the greater sciatic nerve split into
Common fibular part
Tibial part
What is the motor function of the pelvic splanchnic nerves
Motor:
- stimulate erection (PARASYMPATHETIC)
What does the anococcygeal nerve supply
Perianal skin
What level does the common iliac becomes the internal iliac
L5-S1
When does the internal iliac form anterior and posteior parts
Greater sicatic foremaen
What do branches of the posterior internal iliac supply
Lower posterior abdominal wall
posterior pelvic wall
gluteal region
What do branches of the anterior internal iliac supply
Pelvic viscera Perineum gluteal region adductor region of thigh (in the foetus - placenta)
What are the branches of the posterior trunk of internal iliac
iliolumbar artery
Lateral sacral arteries
Superior gluteal arteries
What does the iliolumbar nerve supply
It splits into an iliac and lumbar branch
The lumbar branch supplies the posterior abdominal wall
- psoas major
- quadratus lumborum
- Cauda equina
the iliac branch supplies
- iliac fossa musle and bone
What does the lateral sacral artery supply
Structures in the sacral canal
Skin and muscles posterior to the sacrum
What does the superior gluteal artery supply
Substantial contribution to the blood supply of muscles and skin in the gluteal region and also adjacent muscles in pelvic walls
Where does most of the lymphatics from the pelvis drain?
Internal and external iliac nodes
What from the pelvis drains into the internal iliac nodes
Bladder, prostate, membranous part of urethra, cervix, upper part of vagina
What from the pelvis drains into the external iliac nodes
Gluteal region, deep perineum and inferior pelvic viscera
What from pelvis drains into sacral nodes
Rectum and posterior wall of pelvis
What drains into the common iliac nodes
All lymph from external, internal and sacral lymph nodes
What does the superior vesical artery supply
Superior aspect of bladder
distal parts of ureter
in men may give rise to artery that supplies the ductus deferens
what does the inferior vesicle artery supply
bladder
ureter
seminal vesicle
prostate
What does the vaginal artery supply (inferior vesical artery equivalent )
Vagina
Adjacent parts of the bladder and rectum
What does the middle rectal artery supply
rectum
it anastamoses with superior and inferior
What does the obturator artery supply
Adductors of the thigh
What does the internal pudendal artery supply
perineum
what does the inferior gluteal artery supply (terminal branch of anterior part of internal iliac)
gluteal region
