Flashcards in Resp embryology Deck (11)
what are the stages of lung development/maturation?
ELEPHANTS PLAY CHESS in SUNNY AFRICA
describe the embryonic phase
involves the first stages of lung development, and sees the formation of the lungs' lobes and segments.
respiratory diverticulum forms, including branches
26 days - 6 weeks
describe the pseudoglandular phase
formation of terminal brocnhioles
describe the cannicular phase
resp bronchioles and alveolar ducts begin to form
describe the saccular phase
terminal sacs form
describe the alveolar phase
36 weeks-early childhood
which germ layer forms the lining of trachea and bronchial tree?
which germ layer forms all other lung tissue apart from lining of trachea and bronchial tree?
where does the lung bud develop from and why?
oesophagus and trachea from from same tube then split into 2
what is oesophageal atresia?
oesophagus splits, fuses to and is blocked by trachea