Which of the following is a part of conducting zone in respiratory system?

Options

A. Terminal bronchioles
B. Respiratory bronchioles
C. Alveolar ducts
D. Alveoli

Answer

To determine which of the following is a part of the conducting zone in the respiratory system, we need to understand what the conducting zone is and its components.

### Step-by-Step Solution:

1. **Define the Conducting Zone**:
The conducting zone is a part of the respiratory system that serves as a pathway for air to travel in and out of the lungs. It does not participate in gas exchange but is essential for air conduction.

2. **Identify the Function**:
The primary function of the conducting zone is to provide a route for the incoming and outgoing air. This includes filtering, warming, and humidifying the air before it reaches the lungs.

3. **Components of the Conducting Zone**:
The conducting zone includes various structures such as:
- Nasal cavity
- Pharynx
- Larynx
- Trachea
- Bronchi
- Bronchioles
- Terminal bronchioles

4. **Analyze the Options**:
Given the options (not specified here), we need to identify which one of them is part of the conducting zone. The terminal bronchioles are specifically mentioned as part of the conducting zone.

5. **Conclusion**:
Based on the definition and components of the conducting zone, the correct answer to the question "Which of the following is a part of the conducting zone in the respiratory system?" is **terminal bronchiolus**.