External Oblique Flashcards
1
Q
What are the origins of External Oblique?
A
Costocartilage and ribs 5-12
Interdigits with Serratus Anterior above and Latissimus Dorsi below
2
Q
What are the insertions of External Oblique?
A
Outer lip of anterior 2/3 of iliac crest
Fuses at midline via aponeurosis at the linea alba
Lower free border of aponeurosis stretches between pubic tubercle and ASIs forming inguinal ligament
3
Q
What are the actions of External Oblique?
A
Contralateral Trunk Rotation
Ipsilateral Side Flexion
Assists Trunk Flexion
Rotations caused by oblique muscles is often associated with flexion of the trunk
