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GI > Wk3 GI Development > Flashcards

Wk3 GI Development Flashcards

1
Q

lining of GI and related glands from what embryonic tissue?

A

endoderm

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2
Q

stomodeum (future mouth)

proctodeum (anal pit)

from what embryonic tissue?

A

ectoderm

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3
Q

smooth muscle and CT of GI tract form what embryonic tissue?

A

splanchnic mesoderm

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4
Q

Where does vagus inervation switch to pelvic splanchnic innervation in GI tract?

A

left colic flexure

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5
Q

polyhydramnios?

A

esophageal atresia/stenosis

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6
Q

respiratory distress?

A

tracheoesophageal fistula

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7
Q

Mucous cells in GI epithelium come from?

A

endoderm

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8
Q

Muscularis mucosa derived from?

A

mesoderm

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9
Q

Myenteric nerve plexus derived from?

A

neuroectoderm?

**not splanchnic mesoderm

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10
Q

Failure of apoptosis results in:

A

esophageal stenosis

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11
Q

Arterial supply for developing liver?

A

celiac artery

**in dorsal mesogastrium

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12
Q

Arterial supply for ascending colon?

A

superior mesenteric artery

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13
Q

Ventral mesentary derived from?

A

transverse septum

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14
Q

Liver’s visceral peritoneum formed by?

A

ventral mesentery

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15
Q

Anterior vagal trunk from left or right vagus nerve?

A

left

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16
Q

Spleen develops in the ______ mesentery.

A

dorsal

17
Q

Spleen develops with which part of the developing GI tract?

A

foregut

18
Q

Blood supply to the spleen?

A

celiac trunk

19
Q

Hypertrophy of CIRCULAR smooth muscle of stomach outlet?

A

pyloric stenosis

20
Q

Non-bilious projectile vomiting?

A

pyloric steniosis

21
Q

Bilious vomitting due to failure of recanalization of the intestine?

A

intestina atresia or stenosis

22
Q

Liver bud origin?

A

endoderm

23
Q

Gallbladder, cystic duct, and ventral pancreas origin?

A

Endodermal hepatic diverticulum

24
Q

Interlobular connective tissue of the liver origin?

A

transverse septum

25
Q

Accessory pancreatic duct from which pancreas?

A

dorsal

26
Q

omphaloenteric remnant (yolk stalk)

2 ft proximal to iliocecal junction in adult:

A

Meckel diverticulum

27
Q

Due to persistent umbilical herniation:

A

congenital omphalocele

28
Q

Exposed intestines due to abnormal lateral body wall folding?

A

gastroschisis

29
Q

Proctoduem lymphatics drain to:

A

superficial inguinal nodes

30
Q

Hindgut lymphatics drain to:

A

inferior mesenteric nodes

31
Q

Failure of neural crest cells to migrate into the splanchnic mesoderm of the distal colon?

A

Hirschsprung’s disease

aganglionic megacolon

GI (46 decks)

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