In a bird which organ gets inflated on inspiration

Options

A. Lungs
B. Air sacs
C. Air capillaries
D. All the above.

Answer

To answer the question "In a bird which organ gets inflated on inspiration," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Avian Respiratory System**: Birds have a unique respiratory system that is different from other vertebrates. This system is designed to efficiently deliver oxygen to the body and remove carbon dioxide.

2. **Identify the Key Components**: The avian respiratory system consists of small lungs and a series of air sacs. The air sacs are crucial for the respiratory process but do not directly participate in gas exchange.

3. **Function of Air Sacs**: During inspiration (inhalation), the air sacs inflate. This inflation allows for a continuous flow of air through the lungs, enhancing the efficiency of oxygen uptake and carbon dioxide removal.

4. **Conclusion**: Based on the structure and function of the avian respiratory system, the organ that gets inflated on inspiration is the **air sacs**.

### Final Answer:
The organ that gets inflated on inspiration in a bird is the **air sacs**.

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