Which of the following statements is correct ?

Options

A. During inspiration , external intercostal muscless and diaphragm contract
B. Cyanosis means collapse
C. Eurpose means slow breathing
D. Coryza is caused by human corona virus.

Answer

To determine which statement is correct from the options provided, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Analyze Option 1**:
- The statement mentions that during inspiration, the external intercostal muscles contract.
- This is true. During the process of inspiration (breathing in), the external intercostal muscles and the diaphragm contract, leading to an increase in the volume of the thoracic cavity. This creates a negative pressure that allows air to flow into the lungs.
- **Conclusion**: This statement is correct.

2. **Analyze Option 2**:
- The statement refers to "Cynosis" and claims it means collapse.
- This is incorrect. Cyanosis is a condition characterized by a bluish discoloration of the skin due to insufficient oxygen in the blood, not collapse.
- **Conclusion**: This statement is incorrect.

3. **Analyze Option 3**:
- The statement associates "Urpoos" with slow breathing.
- This is also incorrect. The term that refers to slow breathing is "bradypnea," not "Urpoos."
- **Conclusion**: This statement is incorrect.

4. **Analyze Option 4**:
- The statement claims that "caures" is caused by the human coronavirus.
- This is misleading. "Caures" seems to refer to "coryza," which is inflammation of the mucous membranes in the nose, typically caused by a viral infection, but not specifically the human coronavirus.
- **Conclusion**: This statement is incorrect.

### Final Conclusion:
After analyzing all the options, the correct statement is **Option 1**: "During inspiration, the external intercostal muscles contract."