3 public questions tagged with this topic.
The conducting part of the respiratory system transports air, filters it, and humidifies it, but gas exchange occurs only in the alveoli.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Exchange of Gases and Transport of Oxygen
The diaphragm moves actively during the breathing cycle, contracting during inspiration and relaxing during expiration.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Mechanism of Breathing and Respiratory Volumes
Bronchioles do not have cartilaginous rings; instead, they are composed of smooth muscle, which allows them to constrict or dilate.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Organs and Human Respiratory System
