Lung Function

Question 1

VD
VE
VA

Answer 1

• dead space
• expired air in minute
• alveolar ventilation

Question 2

VO2 Max Average

Answer 2

44/mL/kg/min

Question 3

anatomic equations

Answer 3

VE = VD + VA
VE = TV x RR

Question 4

normal VD and VE values

Answer 4

VD = 150mL
VE = 6L per minute

Question 5

Conducting Zone

Answer 5

Trachea, primary bronchus, bronchus, bronchi, bronchioles

Question 6

Respiratory Zone

Answer 6

Respiratory bronchioles, alovelar ducts and alveolar sacs

Question 7

Alveolar Ventilation

Answer 7

• determines air available for gas exchange
• o2 available for energy/metabolism

Question 8

Boyle’s Law

Answer 8

inverse relationship between gas volume and pressure

Question 9

Vital Capacity

Answer 9

max amount of air expelled from lungs after max inhalation

Question 10

Exercise Effects on TV

Answer 10

alveolar ventilation 70% –> 85% during max exercise
- 60% fvc (INTENSE EXERCISE)
- increased VE due to increased breathing rate

Question 11

Dyspnea

Answer 11

shortness of breath
- elevated arterial CO2 and H+
- excite inspiratory centre in brain to increase rate and depth of breathing
- due to poor fitness levels and poorly ventilatory muscles

Question 12

Inspiratory Reserve Volume

Answer 12

extra volume of air inspired max effort after end of quiet inspiration

Question 13

Expiratory Reserve Volume

Answer 13

volume of air exhaled after resting expiration

Question 14

Residual lung volume

Answer 14

air remaining after forceful expiration