DMH-A Flashcards
(157 cards)
Subcostal nerve
Ventral rami of T12
Lumbar plexus
Ventral rami of L1-L4
Supply abdominal wall, anteromedial thigh, inguinal region
Nerves of lumbar plexus
Iliohypogastric
Ilioinguinal
Lateral femoral cutaneous
Genitofemoral
Femoral
Obturator
Iliohypogastric nerve supplies..
Abdominal muscles and suprapubic area
Ilioinguinal nerve supplies…
Abdominal muscles and inguinal area
Lateral femoral cutaneous nerve supplies…
Skin of lateral thigh
Genitofemoral nerve supplies…
Inguinal area
Femoral nerve supplies…
Anterior thigh
Obturator nerve supplies…
Medial thigh
Caval opening
Around level of T8
Allows for passage of IVC through diaphragm
Esophageal hiatus
Level of T8
Allows entrance of esophagus
Aortic hiatus
Level of T12
Passage of aorta and thoracic duct
Arterial supply of inferior diaphragmatic surface
Inferior phrenic artery
Arcuate line and rectus sheath
Rectus sheath formed by oblique and transverse abdominus muscles that cover rectus muscle
Above arcuate line, sheath covers entire rectus
Below arcuate line, sheath does not cover posterior portion of rectus
Arteries of anterior abdominal wall
Superior and inferior epigastric arteries
Deep circumflex artery - Br of external iliac
Superficial circumflex iliac artery - Br of femoral
Superficial epigastric - Br of femoral
Origin of iliohypogastric and ilioinguinal nerve
L1
Genital branch of genitofemoral nerve
Innervates cremaster muscle in spermatic cord
Constituents of spermatic cord
Processus vaginalis
Ductus deferens
Testicular artery and vein
Lymphatics
Autonomic nerves
Genital branch of genitofemoral nerve
Indirect inguinal hernia
Hernia that passes through deep inguinal ring
Lateral to inferior epigastric artery
More common
Direct inguinal hernia
Bulge directly through abdominal wall medial to inferior epigastric artery
Through hesselbachs triangle
Medial to inferior epigastric artery
More common in adults
Forgut develops into
Pharynx
Esophagus
Stomach
Upper duodenum
Stomach rotation
90 degree rotation about cranio-caudal axis
- Right vagal trunk –> posterior
- Left vagal trunk –> anterior
Stomach tipping
Stomach rotation and mesenteries
Dorsal mesentery expands into greater omentum
Ventral mesentary forms lesser omentum
Stomach rotation and duodenum
Becomes C shaped
Moves against posterior abdominal wall, loses mesentery























