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GI System > 2. Development Of The Gut > Flashcards

2. Development Of The Gut Flashcards

1
Q

What does the mesoderm split up into?

A

Paraxial
Intermediate
Lateral plate

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2
Q

What does the paraxial layer of the mesoderm go on to form?

A

Somites - skeletal muscle, vertebra, cartilage

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3
Q

What does the intermediate layer of the mesoderm go on to form?

A

Kidneys

Gonads

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4
Q

What does the lateral plate layer of the mesoderm go on to form?

A

Somatic and splanchnic mesoderm

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5
Q

What are the major component of the ectoderm form?

A

Epidermis

Nerve tissue

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6
Q

What does the endoderm go on to form?

A

Epithelia of gut

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7
Q

What does the foregut form?

A

Oesophagus to the duodenum

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8
Q

What does the midgut form?

A

Duodenum to distal 2/3 transverse colon

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9
Q

What does the hindgut form?

A

Distal 2/3 transverse colon to upper anal canal

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10
Q

What is the passage between the midgut and yolk sac called and what is its purpose?

A

Vitelline duct

Meckel’s diverticulum forms which connects to the umbilicus

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11
Q

When does cranio-caudal folding take place?

A

4th week

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12
Q

How is an opening formed in the head end of the embryo?

A

Buccopharyngeal membrane ruptures in 4th week

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13
Q

How is an opening formed in the tail end of the embryo?

A

Cloacal membrane ruptures in week 7

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14
Q

Which artery supplies the foregut?

A

Coeliac artery

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15
Q

Which artery supplies the midgut?

A

Superior mesenteric artery

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16
Q

Which artery supplies the hindgut?

A

Inferior mesenteric artery

17
Q

What happens to the foregut in week 4?

A

Lung bud forms off the foregut to form a respiratory bud

Tracheoesophageal septum then forms separating the trachea from the oesophagus

18
Q

What is the space between the parietal and visceral peritoneum?

A

Peritoneal cavity

19
Q

Where does the liver develop?

A

Ventral mesentery of the foregut

20
Q

Where does the spleen develop?

A

In the dorsal mesentery of the foregut

21
Q

Where is the lesser sac in the peritoneal cavity?

A

Behind the stomach

22
Q

Where is the greater sac of the peritoneal?

A

Anterior to the stomach

23
Q

What is the falciform ligament?

A

Runs from anterior wall of abdomen to liver

24
Q

What is the lesser amentum?

A

Mesentery from liver to stomach

25
Q

What is the gastro-splenic ligament?

A

Runs between stomach and spleen

26
Q

What is the spleno-renal ligament?

A

Runs from spleen to left kidney

GI System (26 decks)

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