19: Respiratory system Flashcards
1
Q
How long can you survive w/o food? water? air?
A
~3 weeks, ~3 days, ~ 3 minutes
2
Q
What do Goblet cells do?
A
Produce and secrete mucus for tissue protection in airways
3
Q
Phlegm contain ___ to kill pathogens
A
antimicrobial peptide
4
Q
Mucociliary clearance (MCC) is powered by an estimated ___ cilia that propel a layer of __ towards the __.
A
2x10^12 motile, mucus, larynx
5
Q
What is a Cystic Fibrosis?
A
Mutation in CFTR gene (caused by excessive mucus)
Thick and sticky mucus
6
Q
What is the SA of the airway branch?
A
Total SA: 70-100m^2
Body surface area: ~2m^2
