Alveoli are unable to receive full oxygen due to flattering of tracheal and broachial vessels in

Options

A. Bronchitis
B. Asthma
C. Emphysema
D. Pneumonia

Answer

To solve the question regarding why alveoli are unable to receive full oxygen due to flattening of tracheal and bronchial vessels, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question states that alveoli are unable to receive full oxygen due to the flattening of tracheal and bronchial vessels. We need to identify which respiratory disease is responsible for this condition.

2. **Identifying the Options**: The options provided are:
- A) Bronchitis
- B) Asthma
- C) Emphysema
- D) Pneumonia

3. **Analyzing Each Option**:
- **Bronchitis**: This condition involves inflammation of the bronchial tubes, leading to coughing and mucus production. It does not primarily cause flattening of the tracheal and bronchial vessels.
- **Asthma**: Asthma is characterized by the narrowing of airways due to inflammation and bronchoconstriction. This can lead to difficulty in breathing and reduced oxygen supply to the alveoli.
- **Emphysema**: This is a condition that involves damage to the alveoli, leading to reduced surface area for gas exchange. While it affects oxygen absorption, it is not specifically related to the flattening of tracheal and bronchial vessels.
- **Pneumonia**: This is an infection that inflames the air sacs in one or both lungs, which can fill with fluid or pus. It does not directly relate to the flattening of tracheal and bronchial vessels.

4. **Conclusion**: Given the analysis, the most appropriate answer is **B) Asthma**. Asthma leads to the narrowing of airways, which can result in the alveoli not receiving adequate oxygen due to the flattening of the tracheal and bronchial vessels.

### Final Answer:
**B) Asthma**

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