MUSCLES OF THE ANTERIOR TRUNK

Question 1

Attachments of the: Transversus Abdominus

Answer 1

Lateral 1/3 inguinal ligament, anterior 2/3 iliac crest, thoracolumbar fascia, inner surface of lower 6 ribs and costal cartilages

to the linea alba and pubic crest

Question 2

Attachments of the: Internal Oblique

Answer 2

lateral 2/3 inguinal ligamnet, anterior 2/3 iliac crest and thoracolumbar fasica

to inferior border of lower 4 ribs, linea alba and pubic crest

Question 3

Attachments of the: external oblique

Answer 3

outer borders of lower 8 ribs and costal cartiliges

to the anterior 2/3 iliac crest and linea alba to pubic tubercle

Question 4

Attachments of the: rectus abdominis

Answer 4

anterior surface of pubic symphysis and pubic crest

to the xiphoid porces and costal cartilage of ribs 5, 6 and 7

Question 5

Function of the: rectus abdominus

Answer 5

trunk flexion and side flexion the same side

Question 6

Function of the: external oblique

Answer 6

rotation to the opposite side

trunk flexion and side flexion the same side

Question 7

Function of the: Internal oblique

Answer 7

rotation to the same side

trunk flexion and side flexion the same side

Question 8

Function of the: transverse abdominus

Answer 8

raise abdominal pressure

trunk stability