Muscles of the Anterior Abdominal Wall

Question 1

What is the pyramadilis’ actions on the trunk?

Answer 1

Flexion

Rotation

Question 2

What is the rectus sheath?

Answer 2

The structure that contains the rectus abdomminis

Question 3

What is the rectus sheath made up of?

Answer 3

Aponeuroses of:
Transverse Abdominnis
External Oblique
Internal Oblique

Question 4

What is an aponeurosis?

Answer 4

Sheet of fibrous tissue - tendinous like

Connects the muscle to the part that the muscle moves

Question 5

Below the umbilicus, how does the rectus sheath sit?

Answer 5

All 3 aponeurosis are infant of the rectus

Question 6

At what vertebral level is the position of the umbilicus on the abdominal wall?

Answer 6

L3-4

Question 7

Which thoracic spinal segments innervate the anterior abdominal wall?

Answer 7

Ventral Rami of T7-11

Question 8

What is the innervation of the IO and the EO?

Answer 8

IC nerves 8-12

Question 9

What is the action of the transverse abdomens?

Answer 9

Compresses the abdomen