GI Flashcards
Esophageal constrictions
Pharygoesophageal
Thoracic
Esophageal hiatus
Length of esophagus
10in/ 23-25cm
C6-T10
Average length between external orifice of the nose and stomach
17.2 in/ 44cm
POC for hemorrhage from esophageal varies
Sengstaken-blakemoore baloon
Location:cardiac orifice
2-4cm from the median plane, T10-T11
Location: fundus
5th left rib in the midclavicular plane
Pathogenesis of pyloric stenosis
Muscular is externa hypertophies
Length of nasogastric tube
17.2 in/ 44cm
Other sites of narrowing
- 2in
- 2in
Length of duodenum
10in
Parts of duodenum
Superior-5cm , ant.lat to body of L1
Descending-7-10cm, descends at R side of L1 through L3
Horizontal- 6-8cm and crosses L3
Ascending- 5cm at L of L3
Common site of gastric ulcer
Lesser curvature, above incisura
Common site gastric CA
Pylorus
Common site of duodenal ulcer
Anterior wall of D1
Jejunum vs ilium
Jejunum: deeper red, 2-4cm, thick and heavy, greater vascularity, lesser fat, large and tall plicae circularis
Ilium: pale pink, 2-3 cm, thin and light, lesser vascularity, more fat, low and sparse plicae circularis
Projection of inferior part of the head, extends medially to the L of SMA
Uncinate process
Blood supply of the pancreas
Superior pancreaticoduodenal a (gastroeuodenal<- celiac)
Inferior pancreaticoduodenal a (SMA)
Pancreatic a (splenic)
Pancreatic condition most commonly causes obstructive jaundice
Pancreatic CA
Location of the liver
R hypochondrium, upper epigastrium, L hypochondrium
Remnant of Urachus
median umbilical ligament
Remnant of umbilical vein
Ligament teres
Remnant of ductus venosus
Lig venosum
Remnant of gabernculum
Round lig
Remnant of ductus arteriosus
Ligamentumarteriosum
Remnant of umbilical artery
Medial umbilical ligament
Remnant of foramen ovale
Fossa ovalis
Diamond shape,
Short axis is the intersecting line between neighboring portal areas
Acinus of Rappaport
Liver zone most susceptible to ischemia
Zone 3
Liver biopsy done at
R 10th ICS in MAL
Junction bet neck and body of GB
Hartmann’s pouch
Cystic a. is a branch of
R hepatic<– celiac
Triangle of Calot
Sup: liver edge
Inf: cystic duct
Medial: common hepatic duct
Most common sit of gallstone formation
Hepatopancreatic ampulla
Referred pan for GB stone
T5 through L1 dermatome
Length of LI segments
Transverse 38cm/15in Sigmoid colon 25-38/10-15 Desc colon 25/10 Rectum 13/5 Asc colon 13/5 Anal colon 4/1.5 Appendix 2.5/ 1
McBurney’s point
1/3 of the way up the line joining the ASIS and umbilicus
Blood supply of the appendix
Appendicular artery from iliocolic a.
Most commonly injured n during appendectomy
Iliohypogastric n–> weakening of Abd wall
Most mobile part of the colon
Transverse colon
Most common site of volvulus formation
Sigmoid
Blood supply of rectum
Superior rectal from IMA
Middle rectal from internal iliac
Inferior rectal from internal pudendal
Boundary of Rectus and anus
Puborectalis
Boundary bet upper and lower anal canal
Dentate line
Upper vs. lower rectum
Upper anal canal: endoderm, columnar epith, w/ anal columns, sensitive to stretch , inf mesenteric LN
Lower anal canal: ectoderm, stratified squamous, w/out columns, pain temp touch pressure, superficial inguinal LN
Aganglionic segment
Hirschprung dse
Remnant of yolk sac
Meckel’s diverticulum
Rule of 2 in true diverticulum
2ft from iliocecal valve
2%of population
2 inches long
Ectopic gastric or pancreatic cell
Pain from
Foregut vs midgut vs hindgut
Epigastric vs. umbilical vs. hypogastric
Muscle of the loin
Psoas major
Quadratus lumborum (action)
Extends and laterally flexes the vertebral column
Arise from L2, L3, L4
Femoral n
Obturator n
L4 + L5
Lumbosacral trunk