10.1 GI Abdominal Walls

Question 1

Name the boundaries of the inguinal canal

Answer 1

Roof- Arching fibres of IO and Transverse abdominus
Anterior-EO aponeurosis & IO muscle fibres
Posterior-Transversalis Fascia and conjoint tendon
Floor-inguinal ligament

Question 2

Name the muscles of the posterior wall

Answer 2

Psoas Major-arises from lumbar vertebrae, inserts into trochanter of femur
Psoas Minor- disappearing
Quadratus Lumborum-arise from 12th ribs
IIiacus-filling space of illiac fossa
Inserts into thigh

Question 3

Where is the deep/internal inguinal ring?

Where is the superficial/external inguinal ring?

Answer 3

deep/internal inguinal ring-circular hole in the transversalis fascia
superficial/external inguinal ring-triangular split bt fibres of the EO aponeurosis