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GI > embryology of GI development > Flashcards

embryology of GI development Flashcards

1
Q

parietal peritoneum derviative

A

somatic mesoderm

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2
Q

visceral peritoneum derivitive

A

splanchnic mesoderm

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3
Q

when does GI development begin and end

A

week 3- week 12
1st trimester

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4
Q

what initiates crania-caudal and lateral body folding

A

increased growth and proliferation of cells on the dorsal side

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5
Q

septum transversum forms what

A

diaphragm

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6
Q

what does crania-caudal body folding lead to

A

expansion of amniotic cavity and contraction of the yolk cavity

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7
Q

what does the gut tub run between

A

oropharyngeal membrane and the cloacal membrane

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8
Q

connection between gut tube and yolk sac

A

vitelline duct or the omphalomesenteric duct

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9
Q

what does the intraembryonic coelom become

A

peritoneal cavity

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10
Q

gut tube (endoderm) is surrounded by

A

splanchnic mesoderm

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11
Q

what lines the inner body wall and parts of the limbs (ectoderm)

A

somatic mesoderm

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12
Q

foregut is supplied by

A

celiac artery

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13
Q

midgut is supplied by

A

superior mesenteric artery

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14
Q

hindgut is supplied by

A

inferior mesenteric artery

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15
Q

lower duodenum is what

A

midgut

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16
Q

super duodenum is what

A

foregut

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17
Q

dorsal mesentery is derived from

A

splanchnic mesoderm

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18
Q

retroperitoneal

A

all organs excluded from peritoneal cavity that were never suspended by dorsal mesentery
- or organs anterior to peritoneal cavity

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19
Q

intraperitoneal

A

organs suspended by dorsal mesentery or surrounded by visceral peritoneum

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20
Q

what makes peritoneal fluid

A

mesodermal cells of the peritoneum

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21
Q

ventral mesentery becomes

A

falciform ligament
lesser omentum
coronary ligament
triangular ligament

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22
Q

dorsal mesentery becomes

A

greater omentum
mesentery of small intestine
mesoappendix
transverse mesocolon
sigmoid mesocolon

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23
Q

trachea esophageal septum causes

A

separation of esophagus and trachea

24
Q

stomach rotation

A

rotation to the left and movement to ventral side
generates the lesser sac

25
Q

dorsal wall of stomach forms

A

greater curvature

26
Q

ventral wall of stomach forms

A

lesser curvature

27
Q

ventral stomach innervated by

A

left vagus

28
Q

dorsal stomach innervated by

A

right vagus

29
Q

greater omentum comes from the

A

dorsal mesogastrium

30
Q

liver arises from the

A

hepatic diverticulum

31
Q

hepatoblasts form from what via what

A

hepatocytes via notch signaling

32
Q

parenchyma/hepatocytes come from what germ layer

A

endoderm

33
Q

non-parenchyma of the liver comes from what germ layer

A

splanchnic mesoderm

34
Q

main function of the fetal liver is

A

hematopoesis

35
Q

precursor of galbladder

A

cystic diverticulum

36
Q

the bile duct starts as _____, then becomes ______ through _______

A

closed, open, recanalization

37
Q

ventral pancreas forms from the

A

hepatic plate

38
Q

ventral pancreatic bud rates to the left and fuses with

A

dorsal bud

39
Q

what parts of the pancreatic duct regress

A

proximal 1/3 of dorsal and distal 2/3 of ventral

40
Q

major duodenal papilla or ampulla of vater drains what

A

galbladder and pancreas

41
Q

biliary emesisis looks like what and where is the constriction

A

green- below ampulla of vater

42
Q

non bilious emesis looks like what and where is the constriction

A

not green, above the ampulla

43
Q

pancreas and duodenum are what

A

retroperitoneum

44
Q

spleen is derived from

A

mesoderm

45
Q

primary intestinal loop becomes what

A

cranial part: small intestine
caudal part: colon

46
Q

phases of gut rotation

A

herniation: gut tub goes into umbillicus
retraction: gut tube pulled back into peritoneum

47
Q

when is the herniation phase

A

week 6

48
Q

when is the retraction phase

A

week 10 and 11

49
Q

intraperitoneal structures

A

transverse colon
jejunum and ileum
cecum
appendix
sigmoid colon

50
Q

secondarily retroperitoneal viscera

A

ascending colon and descending colon
pancreas
duodeunum

51
Q

retroperitoneal viscera

A

thoracic esophagus
rectum

52
Q

the urorectral septum splits

A

the cloaca into urogenital sinus and anorectal canal

53
Q

rectum is formed from and drained by

A

endoderm, inferior mesenteric artery and vein of hindgut

54
Q

anus is formed from and drained by

A

ectoderm, internal iliac artery and vein

55
Q

what delineates the anus and rectum

A

pectinate line

56
Q

the internal and external anal sphincters are derived from

A

mesoderm

GI (7 decks)

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