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Embryology ( Digestive System ) > Development of Foregut > Flashcards

Development of Foregut Flashcards

1
Q

Foregut gives us 6 things

A 
Esophagus
Stomach
Liver
Gallbladder
Pancreas
the proximal part of Duodenum
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2
Q

Foregut gives ———— artery

A

celiac

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3
Q

ventral mesentery derived from ——-

A

Septum transversum

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4
Q

ventral mesentery gives ————-

A

ligaments of liver

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5
Q

Esophagus develops from the ———–

A

Endoderm of the forgut in the area between the inlet of laryngio-tracheal tube till the stomach

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6
Q

Esophagus remain tubular in shape with no definite mesentry True or false

A

True

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7
Q

Why esophagus elongates ?

A

to match the growth of the neck and thorax

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8
Q

How many Stages in the Development of the Esophagus and what are their name ?

A

3 stages

Elongation -Recanalization-Differentiation

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9
Q

occurs during the 2nd month; by the 8th week

the proliferating epithelium has partly occluded the lumen. previous definition of which stage ?

A

Elongation

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10
Q

occurs during the 3rd month by

vacuolation in the multilayered columnar epithelium. previous definition of which stage ?

A

Recanalization

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11
Q

of stratified squamous epithelium occurs

during the 4th month. previous definition of which stage ?

A

Differentiation

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12
Q

Epithelial of esophagus comes from ?

A

Endoderm

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13
Q

Muscles of esophagus comes from ?

A

Mesoderm

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14
Q

Give an example of congenital anomaly that could happen in esophagus ?

A

Esophageal atresia & trachea-esophageal fistula

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15
Q

Stop growth of esophagus ?

A

Atresia

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16
Q

Give me the Signs and symptoms of Esophageal atresia & trachea-esophageal fistula

A

1-excessive secretion
2-intermittent and unexplained cyanosis and laryngeal spasm
3-abdominal destination
4-violent response after first or second swallow of feeding such as infants cough and chokes fluid returns through nose and mouth
5-poor feeding
6-inability to pass catheter

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17
Q

Liver develop in which mesogastrium ?

A

ventral

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18
Q

spleen develop in which mesogastrium ?

A

dorsal

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19
Q

True or False : liver and spleen develop within stomach mesenteries

A

True

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20
Q

The stomach undergoes your ——–° clockwise rotation around the cranio-caudal axis to the—– during the——— week

A

right-90-fifth

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21
Q

Left vagus nerve becomes in which direction

A

venteral ( anterior gastric nerve)

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22
Q

Right vagus nerve becomes in which direction

A

Dorsal ( Posterior gastric nerve )

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23
Q 
Results from rotation of stomach 90 degree clockwise to the right 
Left surface --------------
Right surface -------------
Right vagus -------------
Left Vagus ------------
Venteral mesogastrium----------
Dorsal mesogastrum-------------
Lesser sac is enclosed between -------------------layers of ------------------
A

Anterior Surface
Posterior Surface
Posterior gastric nerve
Anterior gastric nerve
Lesser omentum
Gastrophrenic,Gastrosplenic and greater omentum
anterior and posterior 2 layers of greater omentum

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24
Q

Stomach is part of foregut so is supplied by ———-

A

Coeliac trunk

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25
Q 
Congenital Malformation of Stomach :
------------- is Sometimes the circular or longitudinal
musculature of the stomach in the region
of the pylorus is hypertrophied.
One of the most common anomalies in
newborns.
A

Pyloric Stenosis

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26
Q

Treatment of Pyloric stenosis ?

A

Surgical excision of the

thickened sphincter.

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27
Q

what type of vomiting do baby has Pyloric stenosis will have ?

A

Projectile Vomiting

28
Q

Duodenum develops from ——–

A

Duodenal loop

29
Q

The upper half of the loop belongs to the endoderm of the —— and the lower half belongs to endoderm of the ———-
it’s upper part is supplied by —————
it’s lower part is supplied by the ——— mesenteric artery
the junction between the two parts is just distal to the opening of the————

A

forgot-midgut
Celia trunk
superior
bile duct

30
Q

The lumen of duodenum is obliterates by rapid cell proliferation during —————– month then it is recanalized by ————- soon ( 9 - 10 week )

A

2nd - Apoptosis

31
Q

Duodenum grows rapidly forming the ——shaped loop———–

A

C - Ventrally

32
Q

hepato-pancreatic ampulla (The ampulla of Vater)

بالعربي وش فيها

A

فاصل بين جزء duoمن foregut and midgut

33
Q

The mesoduodenum is absorbed(degenration) and the duodenum becomes ————

A

Retroperitoneal

34
Q

commonest anomalies
Symptoms of duodenal atresia
4 things

A 
Symptoms of duodenal atresia include:
1•Upper abdominal swelling (sometimes)
2•Early vomiting of large amounts, which
may be greenish (containing bile)
3•Continued vomiting even when infant has
not been fed for several hours.
4•No bowel movements after first few
meconium stools( باختصار مافي زق )
35
Q

Liver bud gives rise to ————–,—————,———-

A

Liver, biliary duct system, gallbladder

36
Q

Hepatocyte start making bile at —————–

A

12th week

37
Q

Hematopoietic cell make red blood cell during ———

A

6th week

38
Q

————–pancreatic bud forms body, tail and most of head

A

Dorsal

39
Q

————–pancreatic bud forms rest of head

A

Venteral

40
Q

when pancreas secrete insulin ?

A

By week 10

41
Q

Liver is developed from 3 sources ?

A 
Liver bud ( Endoderm)
Vitelline Veins ( mesoderm)
Septum transversum ( Mesoderm)
42
Q

para cystica gives

A

Gall bladder and cystic duct

43
Q

Para hepatica gives

A

Right and left hepatic duct , bile canaculi and cords of liver cells

44
Q

Liver diverticulum from the convexity of ——– divide into

A

duodenum - Para cystica - para hepatica - vitelline vein - septum transversum

45
Q

vitelline vein breaks into ————-

A

blood sinusoids between the cords of liver cells

46
Q

————gives the fibrous capsule and stroma of the liver

A

Septum transversum

47
Q

Commonest congenital anomalies occur in development of liver ? 3 things

A

Gall bladder atresia
atresia of bile duct
absent of gall bladder

48
Q

Failure of para cystic to develop cause

A

absent of gall bladder

49
Q

failure of canalization cause

A

Gall bladder atresia

50
Q

failure of canalization cause

A

atresia of bile duct

51
Q

at day ————– the ventral bud of pancreas will move to the dorsal bud

A

45

52
Q

Development of pancreas
develop from —–buds -1-ventral and dorsal
ventral pancreas arises from the ——– migrates from the convexity into the concavity of the duodenum forms the lower part of the head and uncinate process of pancreas

A

2

liver bud

53
Q

——–pancreas arises directly from the concavity of the duodenum forms the upper part of the head, body and tail of the pancreas

A

Dorsal

54
Q

Congenital anomaly of pancreas

Accessory pancreatic tissue located in the wall of ————– or ————-

A

Stomach or duodenum

55
Q

Congenital anomaly of pancreas
Anular ( ring) shape : thin flat band of pancreatic tissue surrounding the ————–part of duodenum causing ——————

A

second

duodenal obstruction

56
Q

————–glandular buds arise from distal end of the foregut during 4th week

A

three

57
Q

day ———– hepatic bud projects into the ventral mesogastrium and grows in the septum transversum

A

22

58
Q

day— the dorsal pancreatic bud grows into the dorsal ——————

A

26 -mesogastrium

59
Q

Day —– the ventral pancreatic bud grows into the ventral ———

A

28- mesogastrium

60
Q

The position of the pancreatic bud is altered by ———— rotation
mention them

A

two
Ventral pancreas migrate to the dorsal aspect of the foregut
the superior mesenteric artery is trapped between the pancreatic rudiments

61
Q

the ————artery is trapped between the pancreatic rudiments

A

superior mesenteric

62
Q

The foregut and dorsal mesentery fold to the ———–

as a results 2 things

A

dorsal mesentery is obliterated

The pancreas becomes retroperitoneal

63
Q

What explain the anatomical relations of pancreas ?

A

Dual origin

64
Q

two pancreatic buds fuse in the ———–week to form ————–pancreas

A

6th week- definitive

65
Q

The superior mesenteric artery emerges ——to the body and ventral to the ——— process

A

dorsal

uncinate process

Embryology ( Digestive System ) (2 decks)

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