Chest movement are inconspicuous during

Options

A. Normal breathing
B. Abdominal breathing
C. Thoracic breathing
D. Both (1) and (2)

Answer

To answer the question "Chest movements are inconspicuous during," we need to analyze the options provided and understand the mechanics of breathing.

### Step-by-step Solution:

1. **Understanding Breathing Types**:
- Breathing can be categorized into different types: normal breathing, abdominal breathing, and thoracic breathing.
- Normal breathing involves both abdominal and thoracic movements, but the focus here is on when chest movements are less noticeable.

2. **Normal Breathing**:
- Normal breathing (also known as quiet breathing) occurs at rest and involves the diaphragm and intercostal muscles.
- During normal breathing, the diaphragm contracts and moves downwards, while the chest expands slightly. However, the chest movement is not very pronounced.

3. **Abdominal Breathing**:
- Abdominal breathing primarily involves the diaphragm.
- In this type of breathing, the movement of the abdomen is more noticeable than that of the chest. The chest movements are minimal, making them inconspicuous.

4. **Thoracic Breathing**:
- Thoracic breathing, on the other hand, involves more pronounced chest movements as the intercostal muscles expand the rib cage.
- This type of breathing is more noticeable and does not fit the description of inconspicuous chest movements.

5. **Conclusion**:
- Given the analysis, both normal breathing and abdominal breathing result in inconspicuous chest movements.
- Therefore, the correct answer is that chest movements are inconspicuous during both normal breathing and abdominal breathing.

### Final Answer:
The correct option is "both 1 and 2" (normal breathing and abdominal breathing).

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