Embryology

Question 1

Which germ layer does the respiratory tract originate from?

Answer 1

Entoderm

Question 2

How do the trachea and oesophagus develop in relation to each other?

Answer 2

Walls of structures grow towards one another to fuse then separate

Question 3

Which is more anterior - the trachea or oesophagus?

Answer 3

Trachea

Question 4

Tracheoesophageal fistula

Answer 4

A connection between the trachea and oesophagus

Question 5

Oesophageal Atresia

Answer 5

Blind ending of oesophagus with no connection to GI tract

Question 6

Stage 1 of lung development

Answer 6

Embryonic - diverticulum, branching, lobes form and segments

Question 7

Stage 2 of lung development

Answer 7

Pseudoglandular - Terminal bronchioles

Question 8

Stage 3 of lung development

Answer 8

Canalicular - Alveolar Ducts

Question 9

Stage 4 of lung development

Answer 9

Saccular - Terminal sacs form, capillaries make contact

Question 10

Stage 5 of lung development

Answer 10

Alveolar - alveoli mature

Question 11

Type I alveolar cells

Answer 11

Blood-air barrier

Question 12

Type II alveolar cells

Answer 12

Produce surfactant