Respiratory

Question 1

Trace air movement

Answer 1

Trachea –> Primary Bronchus –> Secondary bronchi (lobar bronchi) –> Tertiary bronchi (segmental bronchi) –> single bronchopulmonary segment (smaller bronchi)

Question 2

Trace gas exchange

Answer 2

Bronchiole –> Terminal bronchiole –> respiratory bronchioles –> Alveoli

Question 3

Surfactant

Answer 3

• Oily secretion
• 80% phospholipids (1/2 phosphotitcholine) and <10% proteins
• Coats alveolar surfaces and reduces surface tension

Question 4

Resting tidal volume

Answer 4

Normal respiratory cycle

Question 5

Expiratory reserve volume (ERV)

Answer 5

After normal exhalation

Question 6

Residual volume

Answer 6

After maximal exhalation/minimum volume (in a collapsed lung)

Question 7

Inspiratory reserve volume (IRV)

Answer 7

A normal inspiration

Question 8

Inspiratory capacity

Answer 8

Tidal volume + inspiratory reserve volume

Question 9

Functional residual capacity (FRC)

Answer 9

Expiratory reserve volume + residual volume

Question 10

Vital capacity

Answer 10

Expiratory reserve volume + tidal volume + inspiratory reserve volume

Question 11

Total lung capacity

Answer 11

Vital capacity + residual volume