Embryology Flashcards Preview

GI Physiology > Embryology > Flashcards

Flashcards in Embryology Deck (14):
1

What is the foregut?

Mouth to common bile duct.

Composes of:
Pharynx
Oesophagus
Stomach
Proximal half of duodenum

2

What is the midgut?

Common bile duct to 2/3rds of transverse colon.

Composes of:
Distal half of duodenum
Jejunum
Ileum
Caecum
Appendix
Ascending colon
Right 2/3 of transverse colon

3

What is the hindgut?

Starts at 2/3rds of transverse colon to anal canal

Composes of:
Left 1/3 of transverse colon
Descending colon
Sigmoid colon
Rectum
Anal canal

4

Which artery supplies the foregut?

Celiac artery

5

Which artery supplies the midgut?

Superior mesenteric artery

6

Which artery supplies the hindgut?

Inferior mesenteric artery

7

Which parts of the embryo give rise to the primitive gut?

Endoderm and visceral mesoderm

8

What does the endoderm give rise to?

Epithelial lining of digestive tract
Hepatocytes
Endocrine and exocrine cells of pancreas

9

What does the visceral mesoderm give rise to?

Muscle
Connective tissue

10

Which embryonic structures give rise to the pharynx and larynx?

Pharyngeal arches 1,2,3,4 & 6 (no 5)

11

What is a mesentery?

A double layer of peritoneum that surround an organ and connects it to the body wall.

12

What causes a greater and lesser curvature of the stomach?

The fact that the dorsal wall grows faster than the ventral wall.

13

How is the lesser sac formed?

Stomach rotates 90 degrees clockwise at 7th week, producing a space behind it = the lesser sac

14

What is gastroschisis?

When the gut remains outside an infant when they are born.