The smaller tubes within the chest cavity having cartilaginous plates are known as:
Correct answer: C. Bronchi
- A. Pharynx
- B. Bronchioles
- C. Bronchi
- D. Both B and C
Explanation
The pharynx is a muscular tube-shaped structure that connects the nasal cavity and mouth to the oesophagus and larynx. It is part of both the respiratory and digestive systems and plays a crucial role in the passage of air and food. Bronchioles are small tubes in the lungs that branch off from the bronchi and divide further into even smaller tubes called alveolar ducts. The bronchi are the large airways that connect the trachea to the lungs. Bronchi are supported by cartilage rings, while bronchioles have no cartilage. Instead, they are supported by smooth muscle.
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About Respiration
The human respiratory system includes the air passages, lungs, alveoli and breathing muscles, while gaseous exchange explains how oxygen enters blood and carbon dioxide leaves it by diffusion. The effects of smoking include damage to cilia and alveoli, reduced gas exchange, chronic bronchitis, emphysema and increased risk of lung cancer.
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