Q13 Internal Oblique

Question 1

Give the position of this muscle

Answer 1

Internal oblique lies superficial to transverse abdominis, deep to external oblique and lateral to Rectus abdominis in the anterolateral abdominal wall

Question 2

State the attachments of this muscle

Answer 2

Proximal attachments: arise from lateral two thirds of the inguinal ligament; the anterior two thirds of the iliac crest and the thoracolumbar aponeurosis.
Distal Attachment: Internal surfaces of ribs 9-12 , Pubic crest and Pectin pubis, Linea Alba

Question 3

List the actions of internal oblique muscle if the shoulders are fixed

Answer 3

Flexes the Trunk – bilateral action
Ipsilateral Lateral flexion of the Trunk – unilateral action
Rotates the Trunk toward same side/pelvis to the opposite side –unilateral action

Question 4

list the specific actions of this muscle on the plevis

Answer 4

.Posterior pelvic tilt