Principal muscles of anterolateral abdominal wall

Question 0

insertion of external oblique

Answer 0

Linea alba, public tubercle and anterior half of illiac crest

Question 1

external oblique origin

Answer 1

External surfaces of 5th-12th ribs

Question 2

Innervation of External Oblique

Answer 2

Thoraco-abdominal nerves (anterior rami of T7-T11)

and subcostal nerves

Question 3

Action of external oblique

Answer 3

Compress and support abdominal viscera: flex and rotates trunk

Question 4

Internal oblique origin

Answer 4

Thoracolumbar fascia
anterior 2/3 of illiac crest
connective tissue deep to inguinal ligament

Question 5

Internal oblique insertion

Answer 5

Inferior border of 10-12 ribs
linea alba
pubis via conjoint tendon

Question 6

internal oblique innervation

Answer 6

thoraco-abdominal nerves (anterior rami T7-T11)

subcostal nerves and first lumbar nerve

Question 7

Action of internal oblique

Answer 7

Compress and support abdominal viscera and flexes and rotates trunk

Question 8

Transversus abdominis origin

Answer 8

Internal surfaces of the 7th-12th costal cartilages
thoracolumbar fascia
illiac crest
connective tissue deep to inguinal ligament

Question 9

Transversus abdominis insertion

Answer 9

Linea alba with aponeurosis of internal oblique
pubic crest
pubis via conjoint tendon

Question 10

Innervation of transversus abdominis

Answer 10

Thoraco-abdominal nerve ( anterior rami T7-T11)

subcostal nerve and lower lumbar nerve

Question 11

Action of Transversus adominus

Answer 11

Compresses and supports abdominal viscera

Question 12

Origin of rectus abdominis

Answer 12

Pubic symphysis

pubic crest

Question 13

Insertion of rectus abdominis

Answer 13

xiphoid process

5th-7th costal cartiliages

Question 14

Innervation of rectus abdominus

Answer 14

Thoraco-abdominal and 
subcostal nerves ( anterior Rami of T7-T12)

Question 15

Action of rectus abdominis

Answer 15

flexes trunk
compresses abdominal viscera
stablizesa dn controls tilt of pelvis