Respiratory system

Functions of Bronchi

• Carries oxygen rich in air during inhalation

• Carries carbon dioxide during exhalation outside the lungs.

• Conducts air into pharynx

• Filters the incoming air by trapping dust particles.

Mechanism of Breathing

• Inspiration

• Expiration

• Both

• None of the above

External respiration

• Chemical process involving oxidation of complex and organic substances.

• Takes place outside the cell

• Physical process involving exchange of gases i.e. oxygen and carbon dioxide

• Does not requires enzymes.

Respiratory track involves-

• Trachea

• Nose

• Arteries

• Diaphragm

Benefits of exercise on respiratory system

• Increase in tidal volume

• Increase in aerobic endurance

• Enhances flexibility

• Makes respiratory muscles strong.

Instrument used to check Vital Capacity

• Sphygmomanometer

• Spirometer