Respiratory Tests (Exam 3)

Question 1

How much Nitrogen is in the lungs?

Answer 1

75%

Question 2

What pathologies are associated with small airways?

Answer 2

1. Reduced airway traction
2. Reduced elastin
3. Reduced PEr
4. Thinner Airways
5. More narrow airways

Question 3

What is the capacity/volume of the lungs that is MOST subject to change with advancing age?

Answer 3

Closing Capacity/Closing volume

Question 4

What occurs to RV as we age?

Answer 4

Increases with aging

Question 5

What occurs with ERV with advanced age?
How does this affect FRC and VC?

Answer 5

• Decreases secondary to increased RV
• FRC is slightly increased and VC is reduced

Question 6

At age 20 do we have a large or small closing volume? What does this look like on our closing capacity test?

Answer 6

Small; shorter phase IV

Question 7

Which 2 ways is oxygen transported in blood circulation?

Answer 7

1. Dissolved in plasma
2. Bound to Hgb