Resp embryology Flashcards

1
Q

What are the 5 stages of lung development called?

A
Embryonic
Pseudoglandular 
Canalicular 
Saccular 
Alveolar
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2
Q

When does the embryonic stage of lung development occur?

A

0-5 wks

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3
Q

When does the pseudoglandular stage of lung development occur?

A

5-16 wks

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4
Q

When does the canalicular stage of lung development occur?

A

16-26 wks

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5
Q

When does the saccular stage of lung development occur?

A

26 wks- birth

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6
Q

When does the alveolar stage of lung development occur?

A

Birth- 4 yrs

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7
Q

What develops during the embryonic stage of lung development?

A

Lung and trachea

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8
Q

What develops during the pseudoglandular stage of lung development?

A

Branched trachea, major structural units

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9
Q

What develops during the canalicular stage of lung development?

A

Respiratory bronchioles

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10
Q

What develops during the saccular stage of lung development?

A

Terminal sacs, type one and two cells

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11
Q

What develops during the alveolar stage of lung development?

A

Mature alveoli

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12
Q

What is the immature alveoli of the saccular stage like?

A

Simple with a thick interstitium

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