The abdominals

Question 1

For the transverse Abdominis, what’s it origin, insertion and function?

Answer 1

Origin: Iliac crest (top of hip bone) Inguinal ligament (band from the pubic tubercle to the iliac crest) Ribs 7-12

Insertion: Xiphoid process Linear alba (mid section of abs)

Function: Compression and supports abdominal organs

Question 2

For the rectus abdominis, what’s it origin, insertion and function?

Answer 2

Origin: Creast of pubis and pubis

Insertion: Xiphoid process Ribs 5 to 7

Function: Flexion Compression Lateral flexion

Question 3

For the internal obliques what’s it origin, insertion and function?

Answer 3

Origin: Iliac crest Thoraco-lumbar facia

Insertion: Cartilage of ribs 8-12 Linear alba

Function: Together=flexion Singular = rotation and lateral flexion on contraction side

Question 4

For the external obliques what’s it origin, insertion and function?

Answer 4

Origin: Ribs 5 to 12

Insertion: Linea alba Iliac crest Inguinal ligament

Action: Together = Flexes spine
Singularly = rotation