Muscles Of Anterolateral Abdominal Wall

Question 0

Origin and insertion of external oblique

Answer 0

O: external surfaces of 5th-12th ribs
I: linea alba, pubic tubercle and anterior half of iliac crest

Question 1

Name muscles of anterolateral abdominal wall (4)

Answer 1

External oblique, internal oblique, transverse abdominis and rectus abdominis.

Question 2

Innervation of external oblique

Answer 2

Thoraco-abdominal nerves and subcostals nerve

Question 3

Action of external oblique and internal oblique

Answer 3

Compresses and supports abdominal viscera, flexes and rotates trunk

Question 4

Origin and insertion of internal oblique

Answer 4

O: thoracolumber fascia, anterior 2/3rds of iliac crest and connective tissue deep to lateral 3rd of inguinal ligament
I: inferior borders of 10th-12th ribs, linea alba and pecten pubis

Question 5

Innervation of internal oblique and transverse abdominis.

Answer 5

Thoraco-abdominal nerves (anterior rami of T6-T12) and first lumbar nerves

Question 6

Origin and insertion if transversus abdominis

Answer 6

O: internal surfaces of 7th -12th costal cartilages, thoracolumbar fascia, iliac crest and inguinal ligament.
I: linea alba, pubic crest, pecten pubis

Question 7

Action on transversus abdominis

Answer 7

Compresses and supports abdominal viscera

Question 8

Rectus abdominis origin and insertion

Answer 8

O: pubic symphysis and pubic crest
I: xiphoid process and 5th-7th costal cartilages

Question 9

Innervation of rectus abdominis

Answer 9

Thoraco abdominal nerves (anterior rami of T6-T12 spinal nerves)

Question 10

Action of rectus abdominis

Answer 10

Flexes trunk and compresses abdominal viscera and controls tilt of pelvis

Question 11

Action of internal oblique

Answer 11

Compresses and supports abdominal viscera

Flexes and rotates trunk