Embryology and Anatomy Flashcards
Digestive tract histology:
Plicae circulares
Jejunum and proximal ileum
What is SMA syndrome
transverse portion of duodenum (3rd part) gets trapped between SMA and aorta, causing SBO
Lymphatic drainage below pectinate line
superficial inguinal lymph nodes
Spinal level of aortic bifurcation
L4
Spinal level of celiac trunk
T12
Which hemorrhoids are painful: internal or external
external
Portal triad of hepatic artery, portal vein, and common bile duct are contained in what ligament
hepatoduodenal ligament
Falciform ligament contains what structure
ligamentum teres hepatis
(derivative of fetal umbilical vein)
3 components of mucosal layer
epithelium
lamina propria
muscularis mucosa
Femoral hernia more common in males or females
females
What structures does ventral pancreatic bud contribute to
uncinate process
main pancreatic duct
Digestive tract histology:
nonkeratinized stratified squamous epithelium
esophagus
Lymphatic drainage above pectinate line
internal iliac lymph nodes
Digestive tract histology:
Absence of villi
colon
Are most anal fissures anterior or posterior
posterior
4 main layers of the gut wall
MSMS
Mucosa
Submucosa
Muscularis externa
Serosa
Parasympathetic innervation
Foregut:
Midgut:
Hindgut:
Foregut: Vagus
Midgut: Vagus
Hindgut: Pelvic
Which liver zone is first affected by ingested toxins and viral hepatitis
Zone 1: periportal
Digestive tract histology:
Brunner glands (bicarb secreting cells of submucosa)
Duodenum
What liver zone is affected in yellow fever
Zone 2: intermediate zone
Spinal level of IMA
L3
What structures are retroperitoneal
Distinguish primarily vs secondarily
SAD PUCKER
Suprarenal (adrenal)
Aorta
Duodenum (2nd-4th part)
Pancreas (except tail)
Ureters
Colon (except transverse)
Kidneys
Esophagus
Rectum
What liver zone is affected in alcoholic hepatitis and is the first zone to be affected in ischemia
Zone III: pericentral (centrilobular zone)
Digestive tract histology:
Peyer patches
Also largest number of goblet cells in small bowel
Ileum
