Internal Abdominal Oblique

Question 1

Internal Abdominal Oblique (ORIGIN)

Answer 1

Thoracolumbar fascia, anterior two-thirds of the iliac crest, lateral half of the inguinal ligament

Question 2

Internal Abdominal Oblique (INSERTION)

Answer 2

Inferior borders of ribs 10-12, linea alba, and pecten pubis via the conjoint tendon

Question 3

Internal Abdominal Oblique (INNERVATION)

Answer 3

Thoracoabdominal nerves (T7-T11), subcostal nerve (T12), and iliohypogastric and ilioinguinal nerves (L1)

Question 4

Internal Abdominal Oblique (BLOOD SUPPLY)

Answer 4

Lower intercostal arteries, superior and inferior epigastric arteries, deep circumflex iliac artery

Question 5

Internal Abdominal Oblique (ACTION)

Answer 5

Compresses and supports abdominal viscera.
Flexes and rotates the trunk.