Step I Mucociliary escalator - FA vs UW

[alternatego]

UW states pseudostratified ciliated columnar epithelium extends down to the terminal bronchioles, while FA (2011) says it extends down to the respiratory bronchiole. Which one is correct?

A quick search on Wiki seems to point that UW is right, but I wanted to make sure by asking you guys first.

 

[Throwsheat313]

UW states pseudostratified ciliated columnar epithelium extends down to the terminal bronchioles, while FA (2011) says it extends down to the respiratory bronchiole. Which one is correct?

A quick search on Wiki seems to point that UW is right, but I wanted to make sure by asking you guys first.

According to GT, it only extends down to the terminal bronchioles, NOT the respiratory bronchiole. The respiratory bronchiole becomes simple ciliated cuboidal/columnar.

 

[Slack3r]

From the 2012 Errata:

In the first sentence, pseudostratified ciliated columnar cells do not extend to the
respiratory bronchioles. Pseudostratified ciliated columnar cells extend up to and
including the terminal bronchiole, at which point the epithelium becomes cuboidal
ciliated.

 

[LaCasta]

I was looking this up today also, and to add to what is above, the epithelium in the alveolar sacs becomes simple squamous to help with diffusion.

 

[MedStudent1008]

Uworld is prolly right.
Another error in first aid. aortic stenosis causing systolic ejection murmur radiates to carotids/base not apex?