Abdominal Overview Flashcards
Main arteries that supply their specific part of the gut tube
Foregut: Celiac trunk
Midgut: superior mesentary
Hindgut: inferior mesentary
Parts of the foregut
Abdominal esophagus
Stomach
Proximal duodenum
Liver and gallbladder
Pancreas
all supplied by celiac trunk
What is supplied by the celiac trunk but is gut derivative?
Spleen
Parts of Midgut
Distal duodenum
jejunum
ilium
cecum
Ascending colon
Proximal transverse colon
all supplied by superior mesentery artery
Parts of the hindgut
Distal Transverse colon
Descending colon
Sigmoid colon
Rectum
Superior anal canal
all supplied by the inferior mesentery artery
Ligament of the lesser omentum
Hepatogastric: separates stomach from liver
Hepatoduodenal: separates duodenum and liver.
Hepatoduodenal ligament significance
Contains portal triad, epiploic foramen of Winslow and the lesser sac (omental bursa)
What is contained in the portal triad?
Hepatic portal vein
Hepatic artery
Bile duct
Ligaments of the peritoneal
Root of mesentery
Suspensory ligament of Trietz
Falciform ligament
Gastrophrenic ligament of greater omentum
Gastrosplenic ligament of greater omentum
Gastronomic ligament of greater omentum
- separates stomach and transverse colon
Subdivisions of peritoneal cavity
Greater peritoneal sac
Lesser peritoneal sac
Transverse mesocolon
- divides abdominal cavity into supracolic and infracolic
How does the greater and lesser peritoneal sacs communicate?
Through the epiploic foramen
How do supracolic and infracolic compartments communicate?
Freely through parabolic gutters
Psoas major attachment, innervation and functions
Attaches to lesser trochanter
Innervated by L2-L4 anterior rami
Functions to:
- bilaterally flex and externally rotate hips
- raises trunk from a supine position
- unilaterally bends trunk to ipsilateral side
Illiacus Attachment, innervation and functions
Attachment is lesser trochanter
Innervated by femoral nerve (L2-L4)
Functions to
-bilaterally adducted and externally rotates hip
Quadratics lumborum Attachment, innervation and functions
Iliolumbar ligament/internal iliac crest
Innervation: subcostal iliohypogastric, ilioinguinal-inguinal nerves and anterior rami of L2-L4
Functions: bilaterally adducted and externally rotates hip ipsilaterally.