Respiratory Physiology

Question 0

Amount of air that can be expired beyond TV

1200 ml

Answer 0

ERV (Expiratory reserve volume)

Question 1

Amount of air inspired and expired

500ml

Answer 1

Tidal volume (TV or Vt)

Question 2

Amount of air that can be inspired beyond TV

3100 ml

Answer 2

IRV ( inspiratory reserve volume)

Question 3

Remains in lungs after forced expiration
1200ml
-a fraction of this is called __, remains even in a collapsed lung

Answer 3

RV (residual volume)

Minimal volume

Question 4

TV+IRV+ERV+RV =6000 ml

Answer 4

TLC total lung capacity

Question 5

TV+IRV maximum amount that can be inspired after normal expiration

Answer 5

IC (inspiratory capacity)

Question 6

TV+IRV+ERV=4800 ml amount that can be physically be inspired or expired

Answer 6

VC (Vital capacity)

Question 7

Volume remaining in lungs after normal tidal volume expiration RV+ERV=2400 ml

Answer 7

FRC (functional residual capacity)

Question 8

Volume of air remaining in conducting portion of respiratory system per breath. 30% of TV (150 ml)

Answer 8

Anatomical dead space

Question 9

Total amount of air that flows into/put of respiratory tract per minute
12*(TV)500ml=600 ml

Answer 9

Minute ventilation

Question 10

Part of minute ventilation that is actually used for respiration
Breaths per minute*(70%TV OR 350 ml)

Answer 10

AVR alveolar ventilation rate

Question 11

Maximum amount of air forcefully expired in first second (80%VC is NORMAL)

Answer 11

FEV 1.0

Question 12

Breathing

Answer 12

Pulmonary ventilation

Question 13

Exchange of gases between alveolar air/blood

Answer 13

External respiration

Question 14

Exchange of gases between blood/tissues

Answer 14

Internal respiration