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
