Given is the diagram of the respiratory system of a goat. The part of the air passage which lack(s) cartilage is
Correct answer: C. III only
- A. I only
- B. I and II
- C. III only
- D. II and III
Explanation
III represents bronchioles, which lack cartilage. Both I (trachea) and II (bronchi) have cartilage.
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About Human Respiratory System
The human respiratory system conducts air to the alveoli, where oxygen and carbon dioxide exchange occurs across thin respiratory surfaces. Questions cover the nasal passage, trachea, bronchi, lungs, diaphragm and intercostal muscles, ventilation mechanics and gas transport, while distinguishing breathing and gaseous exchange from cellular respiration.
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