Anterior Abdominal Wall Arteries: Above Umbilicus

Question 1

Above umbilicus

Answer 1

Internal thoracic artery branches:
1. Superior epigastric artery
2. Musculophrenic artery
Descending thoracic aorta branches:
1. Posterior intercostal (7th-11th) artery
2. Subcostal artery

Question 2

Superior epigastric artery

Answer 2

1. Descends behind 7th costal cartilage
2. Enter rectus sheath upper part behind rectus abdominis down to umbilicus level
3. It anastomoses with inferior epigastric

Question 3

Musculophrenic artery

Answer 3

1. Enters anterior abdominal wall upper lateral part
2. Runs downwards and lateral along costal margin

Question 4

Posterior intercostal and subcostal arteries

Answer 4

1. Descend downwards and medial through neurovascular plane between internal oblique and transversus abdominis
2. Enter rectus sheath extending behind rectus abdominis from lateral to medial