6.1 Neurovasculature of the Posterior Abdomen

Question 1

Identify the abdominal aorta

Answer 1

-

Question 2

Identify the gonadal aa.

From where do these branch?

Answer 2

Abdominal aorta.

Question 3

Identify the Lumbar aa

From where do these branch?

Answer 3

Abdominal aorta.

Question 4

Identify the common iliac aa.

Identify the internal and external iliac aa.

Answer 4

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Question 5

Identify the 7 major nerves of the posterior abdominal wall and their spinal roots.

Answer 5

Subcostal nerve (T12)
Iliohypogastric (L1, along iliac crest)
Ilioinguinal nerve (L1, exits from superficial ring)
Genitofemoral (L1-L2, exits from psoas major)
Lateral femoral cutaneous nerve (L2-L3)
Femoral nerve (L2-L4, very large)
Obturator nerve (l2-L4, medial to psoas major)