Posterior Abdominal Wall

Question 1

Origin and insertion of psoas major

Answer 1

O: L1-5 transverse processes and bodies

I: Lesser trochanter

Question 2

Functions of psoas major

Answer 2

Laterally bend trunk, stabilize trunk

Flex thigh w/ iliacus

Question 3

What are ALL the posterior abdominal wall muscles innervated by?

Answer 3

Muscular branches of the lumbar plexus (L1-L4)

Question 4

Where does psoas minor insert?

Answer 4

Pectineal line and iliopectineal prominence

Question 5

What does psoas major do that minor does NOT do?

Answer 5

Flex thigh w/ iliacus

Question 6

Only posterior abdominal wall muscle innervated by the subcostal n (T12)

Answer 6

Quadratus lumborum

Question 7

Innervation of the iliacus m.

Answer 7

Femoral n.

Question 8

R. and L. crus of the diaphragm are formed by what?

Answer 8

Anterior longitudinal lig., vertebral bodies, intervertebral discs

Question 9

Median arcuate ligament of the diaphragms surrounds what?

Answer 9

Aortic hiatus

Question 10

What anchors the esophagus to the diaphragm at the esophageal hiatus?

Made from what?

Answer 10

Phrenicoesophageal ligament

Inferior diaphragmatic fascia

Question 11

Roots of the phrenic n.

Answer 11

C3-C5

“C3-C5 keep the diaphragm alive”

Question 12

Which nerves are considered thoracoabdominal nerves?

Answer 12

T6/7 - T11

Question 13

Where is pain to the thoracic diaphragm often felt?

Answer 13

Right shoulder/scapular region

Question 14

3 paired lateral visceral arteries off of the abdominal aorta

Answer 14

Middle suprarenal aa.

Renal aa.

Gonadal aa.

Question 15

5 segments of the kidney

All arteries to each one comes off of what?

Answer 15

Superior
Anterosuperior
Anteroinferior
Inferior
Posterior

Renal a.

Question 16

2 types of paired segmental parietal arteries off the abdominal aorta

Answer 16

Inferior phrenic aa.

Segmental aa.

Question 17

2 types of segmental aa. in the abdominal region

Answer 17

Subcostal a. (T12)

Lumbar aa. (L1-4)

Question 18

What artery does not fall into any of the 3 categories off of the abdominal aorta?

Answer 18

Median sacral a.

Question 19

What 3 veins drain into the common iliac v. rather than the IVC?

Answer 19

Internal iliac v.

External ililac v. (femoral)

Epigastric v.

Question 20

Thoracic duct goes from ___ through the ___ to the ___

Answer 20

Chyle cistern

Aortic hiatus

L. jugular/L. subclavian vv. jxn

Question 21

Anterior abdominal wall superficial lymph goes into what 2 lymph node groups?

Splits (up vs. down) where?

Answer 21

Axillary
Superficial inguinal

Splits at about the umbilical region

Question 22

Stomach, duodenum, spleen, and pancreas lymph drains into which lymph nodes?

Answer 22

Pancreaticosplenic

Question 23

Which lymph nodes give the greatest contribution to the thoracic duct?

Drain what?

Answer 23

Hepatic lymph nodes

Deep liver, anterior superficial liver, bile duct, cystic lymph nodes

Question 24

Lymph from the esophagus, stomach, spleen, and pancreas all eventually end up in which nodes?

Answer 24

Celiac nodes