Posterior Abdominal Wall

Question 1

Where is the posterior abdominal wall

Answer 1

Region behind the abdominal cavity

Question 2

Where does the posterior abdominal wall extend

Answer 2

Attachments of the diaphragm above to the pelvic brim below

Question 3

What does the posterior abdominal wall consist of

Answer 3

Lumbar spine
Psoas and quadratus lumborum muscles

Question 4

Which structures run along the posterior abdominal wall

Answer 4

Inferior vena cava
Aorta with its associate autonomic plexuses and lymph node
Sympathetic trunks on either side of the lumbar spine

Question 5

Laterally where do the ureters pass down from the kidney towards the pelvis

Answer 5

Psoas muscle

Question 6

Do the gonadal vessels run down over or under the ureters to supply the gonads

Answer 6

Over

Question 7

What forms the lumbar plexus

Answer 7

Lumbar spinal nerves L1-L4

Question 8

What does the lumbar plexus give rise to

Answer 8

Several branches which innervate the skin and muscles of the abdominal wall and thigh

Question 9

What are branches of the lumbar plexus which can be located on the posterior abdominal wall

Answer 9

Iliohypogastric and ilioinguinal nerves
Genitofemoral nerve
Lateral femoral cutaneous nerve
Femoral nerve
Obturator nerve

Question 10

What do the iliohypogastric and ilioinguinal nerves supply

Answer 10

The anterior abdominal wall muscles
skin of the external genitalia

Question 11

What do the genitofemoral nerves supply

Answer 11

Skin of the external genitalia

Question 12

What does the lateral femoral cutaneous nerve supply

Answer 12

Skin over the lateral thigh

Question 13

What is another term for the lateral femoral cutaneous nerve

Answer 13

Lateral cutaneous nerve of the thigh

Question 14

What does the femoral nerve supply

Answer 14

Large nerve

The muscles and skin of the anterior thigh

Question 15

What does the obturator nerve supply

Answer 15

Muscles and skin of the medial thigh

Question 16

Where does the thoracic aorta pierce the diaphragm

Answer 16

T12 vertebra

Question 17

What does the thoracic aorta become

Answer 17

Abdominal aorta

Question 18

Which side does the abdominal aorta descend

Answer 18

Posterior wall just left of the midline

Question 19

What do the abdominal aorta terminate into

Answer 19

Bifurcate into left and right common iliac arteries

Question 20

Where do the abdominal aorta terminate

Answer 20

L4

Question 21

What does the abdominal aorta give rise to

Answer 21

Paired and unpaired branches

Question 22

What are the unpaired branches of the abdominal aorta

Answer 22

Coeliac trunk
Superior mesenteric artery
Inferior mesenteric artery

Question 23

What are the paired branches of the abdominal aorta

Answer 23

Renal arteries
Adrenal arteries
Gonadal arteries
Lumbar arteries

Question 24

What is the inferior vena cava formed by

Answer 24

Left and right common iliac veins

Question 25

What level is the inferior vena cava start

Answer 25

L5

Question 26

Where does the inferior vena cava ascend

Answer 26

Posterior abdominal wall just right of the midline

Question 27

What drains into the inferior vena cava

Answer 27

Paired arterial branches from abdominal aorta

Hepatic veins

Question 28

What is the exception to the drainage into the inferior vena cava

Answer 28

Left gonadal vein typically drains into left renal vein