Origin and insertion of psoas major
O: L1-5 transverse processes and bodies
I: Lesser trochanter
Functions of psoas major
Laterally bend trunk, stabilize trunk
Flex thigh w/ iliacus
What are ALL the posterior abdominal wall muscles innervated by?
Muscular branches of the lumbar plexus (L1-L4)
Where does psoas minor insert?
Pectineal line and iliopectineal prominence
What does psoas major do that minor does NOT do?
Flex thigh w/ iliacus
Only posterior abdominal wall muscle innervated by the subcostal n (T12)
Quadratus lumborum
Innervation of the iliacus m.
Femoral n.
R. and L. crus of the diaphragm are formed by what?
Anterior longitudinal lig., vertebral bodies, intervertebral discs
Median arcuate ligament of the diaphragms surrounds what?
Aortic hiatus
What anchors the esophagus to the diaphragm at the esophageal hiatus?
Made from what?
Phrenicoesophageal ligament
Inferior diaphragmatic fascia
Roots of the phrenic n.
C3-C5
“C3-C5 keep the diaphragm alive”
Which nerves are considered thoracoabdominal nerves?
T6/7 - T11
Where is pain to the thoracic diaphragm often felt?
Right shoulder/scapular region
3 paired lateral visceral arteries off of the abdominal aorta
Middle suprarenal aa.
Renal aa.
Gonadal aa.
5 segments of the kidney
All arteries to each one comes off of what?
Superior Anterosuperior Anteroinferior Inferior Posterior
Renal a.
2 types of paired segmental parietal arteries off the abdominal aorta
Inferior phrenic aa.
Segmental aa.
2 types of segmental aa. in the abdominal region
Subcostal a. (T12)
Lumbar aa. (L1-4)
What artery does not fall into any of the 3 categories off of the abdominal aorta?
Median sacral a.
What 3 veins drain into the common iliac v. rather than the IVC?
Internal iliac v.
External ililac v. (femoral)
Epigastric v.
Thoracic duct goes from ___ through the ___ to the ___
Chyle cistern
Aortic hiatus
L. jugular/L. subclavian vv. jxn
Anterior abdominal wall superficial lymph goes into what 2 lymph node groups?
Splits (up vs. down) where?
Axillary
Superficial inguinal
Splits at about the umbilical region
Stomach, duodenum, spleen, and pancreas lymph drains into which lymph nodes?
Pancreaticosplenic
Which lymph nodes give the greatest contribution to the thoracic duct?
Drain what?
Hepatic lymph nodes
Deep liver, anterior superficial liver, bile duct, cystic lymph nodes
Lymph from the esophagus, stomach, spleen, and pancreas all eventually end up in which nodes?
Celiac nodes