External Oblique

Front 1

Origin

Back 1

Outer surfaces of Middle of shaft of 5 to 12 ribs (lower 8 ribs)

Front 2

Insertion

Back 2

➡ Aponeurosis :-

- xiphoid process

- linea alba

- pubic crest

- pubic tubercle

- Pectineal line of pubis

- Pubic symphysis

➡Lower Fibers :-

- ant 2 3rd of outer lip of iliac crest

Hint 2

Insertion occurs in 2 ways

Fibers(lower fibers of muscle) and aponeurosis (formed by upper fibers of the muscle)

Front 3

Nerve supply

Back 3

Lower 6 intercostal nerves

Front 4

Fibers direction?

Back 4

Downwards, medically and forwards

Hint 4

Putting hands in pocket

Front 5

Upper fibers interdigitate with which muscle

Back 5

Serratous anterior

Front 6

Lower fibers interdigitate with which muscle

Back 6

Latismus dorsi

Front 7

Inguinal Ligament formed from which part of muscle

Back 7

Aponeurosis

Front 8

Inguinal Ligament formation

Back 8

Btw asis and pubic tubercle the free inferior border of aponeurosis folds on itself to form ligament

Front 9

Superficial inguinal ring formation

Back 9

Just above pubic crest - external. Oblique aponeurosis presents triangular aperture

Front 10

Junction of muscle fiber with aponeurosis

Back 10

Hint 10

Front 11

Which borders of the muscle are free

Back 11

Posterior and upper borders

Front 12

At which point or place aponeurosis from rectus sheath

Back 12

Between linea semilunaris and linea alba

Front 13

Which wall of rectus it forms

Back 13

Anterior wall