Embryology

Question 1

Endoderm

Answer 1

Epithelium of mucosa

Associated ducts and glands

Question 2

Visceral mesoderm

Answer 2

Lamina propria

Muscularis mucosa and muscularis externa

Question 3

Ventral mesenteries

Answer 3

Faliciform ligament

Lesser omentum

Question 4

Dorsal mesenteries

Answer 4

Dorsal mesogastrium
Dorsal mesoduodenum
Dorsal mesocolon

Question 5

When is the oesophagus distinguishable

Answer 5

week 4

Question 6

when does circular muscle develop

Answer 6

week 5

Question 7

when does longlitudinal muscle develop

Answer 7

week 8

Question 8

what causes the dorsal mesentery to bulge

Answer 8

growth and rotation of stomach creating the lesser sac

Question 9

Caudal portion of foregut

Answer 9

parts 1 and 2 of duodenum

Question 10

cranial portion of foregut

Answer 10

parts 3 and 4 of duodenum

Question 11

what direction is duodenal loop directed

Answer 11

right

Question 12

what directs the duodenal loop

Answer 12

rotation of the stomach

Question 13

what does the liver bud grow into

Answer 13

mesoderm of septum transversum

Question 14

endoderm

Answer 14

liver cells

lining of biliary tree

Question 15

septum transversum

Answer 15

hematopioetic cells
Kupffer cells
connective tissue

Question 16

When does the spleen develop

Answer 16

Week 5