Respiratory - Respiratory Embryology - Week 3

Question 1

Explain how a lung bud develops.

Answer 1

Tracheoesophageal ridge forms

Question 2

What is the most likely respiratory congenital defect?

Answer 2

Trachea & oesophagus doesn’t separate properly

Question 3

What are the two types of defects which can occur when the trachea and oesophagus separate in development?

Answer 3

Oesophageal atresia & tracheoesophageal fistula

Question 4

What is meant by oesophageal atresia?

Answer 4

Blind-ending of the oesophagus

Question 5

What is meant by tracheoesophageal fistula?

Answer 5

Communication between the oesophagus

Question 6

The trachea is formed by which day of development?

Answer 6

28 days

Question 7

How many secondary buds are formed?

Answer 7

3 on the right, 2 on the left

Question 8

The lungs grow into the…

Answer 8

Mesoderm

Question 9

The lining of the lungs is made from the…

Answer 9

Endoderm

Question 10

State the 5 stages in lung development.

Answer 10

Embryonic, Pseudoglandular, Canalicular, Saccular, Alveolar