Lab 7- Post.ab.wall Pg.3

Front 1

muscles that form the posterior abdominal wall:

Back 1

1. psoas major
2. quadratus lumborum
3. transversus abdominis

Front 2

Arteries as they arise from the abdominal aorta:

Back 2

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Phrenic [inferior] (inferior phrenic arteries), Celiac inferior (celiac trunk), Superior mesenteric, Renal artery, Testicular ["in men" only] or ovarian arteries in females, Lumbars (lumbar arteries [4 pairs]), Inferior mesenteric, Common iliac arteries

Front 3

4 portions of the thoracic diaphragm:

Back 3

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1. Sternal part -attaches to the xyphoid process
2. Costal part -attaches to the lower six costal cartilages
3. Lumbar part -attaches to the superior three lumbar vertebral bodies
4. Central tendon -- is the aponeurotic insertion of the muscle

Front 4

crura of the lumbar portion:

Back 4

1. left crus
2. right crus -a muscle slip from this crus running inferomedially is the remaining portion of the suspensory muscle of the duodenum (ligament of Treitz) that supports the duodenojejunal flexure

Front 5

A muscle slip from the (A) crus that runs inferomedially is the (B) remaining portion of the that supports the duodenojejunal flexure.

Back 5

(A) right

(B) suspensory muscle of the duodenum (ligament of Treitz)

Front 6

The arcuate ligaments (lumbocostal arches) are:

Back 6

1. medial arcuate ligament
2. lateral arcuate ligament
3. median arcuate ligament

(medial-lateral-median)

Front 7

a tendinous arch providing a gap for the psoas muscle

Back 7

medial arcuate ligament

Front 8

across the superior portion of the quadratus lumborum

Back 8

lateral arcuate ligament

Front 9

unites the crura of the diaphragm and passes over the anterior surface of the aorta

Back 9

median arcuate ligament

Front 10

The 3 large openings in the diaphragm are:

Back 10

1. venacaval foramen
2. esophageal hiatus
3. aortic hiatus

Observe: The higher the vertebral level, the more ventral is the hiatus in the diaphragm.