Alimentary Anatomy Flashcards
Innervation of External Oblique
T7-T11
Innervation of Internal Oblique
T6-L1
Innervation of Transversus Abdominus
T6-L1
Innervation of Rectus Abdominus
T6-T12
What 3 Muscles aponeurose to form the rectus sheath
External Obliques
Internal Obliques
Transversus Abdominus
What 2 muscles lie within the rectus sheath
Rectus Abdominus
Pyramidalis
What is the function of the pyramidalis muscle
Tense the rectus linae alba
Where does the rectus sheath terminate inferiorly
Arcuate line
Describe superficial blood supply of the anterior abdomen wall
Superior and inferior epigastric arteries
Describe superficial blood drainage of the anterior abdomen wall
Superior and inferior epigastric veins
Where does the superior epigastric artery arise
Internal thoracic artery
Where does the inferior epigastric artery arise
External ileac artery
Where does the superior epigastric vein drain
Subclavian/jugular junction
Where does the inferior epigastric vein drain
Common iliac vein
Where does superficial lymph drainage of the abdominal wall go above the umbilicus
Axillary LNs
Where does superficial lymph drainage of the abdominal wall go below the umbilicus
Inguinal LNs
Roughly how long is the inguinal canal
4cm
What is the origin and insertion of the inguinal ligament
Origin - Pubic tubercle
Insertion - ASIS
The inguinal ligament is formed by the aponeuroses of which muscle
External obliques
The superficial inguinal ring is a break in which layer of the muscle
External obliques
What layer is the deep inguinal ring an opening in
Fascia Transversalis
What goes through the inguinal canal in a male
Spermatic duct
Ilio-inguinal nerve
Blood and lymph vessels
What goes through the inguinal canal in a female
Round ligament of uterus
Ilio-inguinal nerve
Blood vessels and lymphatics
What level does the celiac trunk begin
T12
What level does the superior mesenteric artery begin
L1
What level does the inferior mesenteric artery begin
L3-4
What are the 3 branches of the celiac trunk
Left gastric artery
Common hepatic artery
Splenic artery
What level do the renal arteries begin
L1
What veins merge to form the portal vein
Superior mesenteric
Splenic vein
What level does the aorta and IVC bifurcate
L4
Where does the inferior mesenteric vein drain
Splenic vein
Name 3 points of portosystemic anastamoses
Lower oesophagus
Anal canal
Umbilical region
Where does the lumbar plexus originate
L1-L4
What nerves come from the lumbar plexus (in superior to inferior order)
Iliohypogastric
Ilio-inguinal
Genitofemoral
Lateral cutaneous
Femoral
Obturator
What are the root value(s) of the iliohypogastric nerve
L1
What are the root value(s) of the ilio-inguinal nerve
L1
What are the root value(s) of the genitofemoral nerve
L1 + L2
What are the root value(s) of the lateral cutaneous femoral nerve
L2 + L3
What are the root value(s) of the femoral nerve
L2 + L3 + L4
What are the root values of the obturator nerve
L2 + L3 + L4