L2 - Development of the Lungs Flashcards by J L | Brainscape

Q

What embryonic tissue is the respiratory system derived from?

A

Respiratory epithelia is derived from splanchnic endoderm.

Supporting mesenchyme is derived from splanchnic LP-mesoderm.

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Q

What are the 6 stages of lung development?

A

EPCSAM

Embryonic (wk4-7)
Pseudoglandular (wk6-17)
Canalicular (wk16-28)
Saccular (wk28-36)
Aveolar (term-22y.o.)
Microvascular maturation (birth to 3-21 years)

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Q

What are the 6 stages of lung development?

A

EPCSAM

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Q

In what stage of lung development is surfactant produced?

A

Stage 4 - Saccular

Type 1 and 2 pneumocytes differentiate and T2 produce surfactant in greater quantity.

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Q

What is the embryonic structure that forms the central tendon?

A

Septum transversum.

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