Abdominal Aorta

Question 1

Beginning

Answer 1

At 12th thoracic vertebra lower border of as continuation of descending thoracic aorta

Question 2

Course

Answer 2

Passes through aortic opening of diaphragm and descends in front of upper 4 lumbar vertebrae bodies with slight inclination to left

Question 3

End

Answer 3

At 4th lumbar vertebra lower border, where it bifurcates into 2 common iliac arteries

Question 4

Surface anatomy

Answer 4

Line drawn from point in median plane 2cm above transyloric plane to point 2 cm below and to left of umbilicus

Question 5

Branches

Answer 5

1. Single branches
2. Paired branches

Question 6

Single branches

Answer 6

1. Coeliac trunk
2. Superior mesenteric artery
3. Inferior mesenteric artery
4. Median sacral artery

Question 7

Coeliac trunk

Answer 7

Arises opposite 12th thoracic vertebra lower border or 1st lumbar vertebra upper border

Question 8

Superior mesenteric artery

Answer 8

Arises opposite 1st lumbar vertebra lower border

Question 9

Inferior mesenteric artery

Answer 9

Arises opposite 3rd lumbar vertebra

Question 10

Median sacral artery

Answer 10

Arises from back of aorta lower end at 4th lumbar vertebra level and descends to pelvis