Human beings have a significant ability to maintain and moderate the respiratory rhythm to suit demands of the body. For it we have
Respiratory rhythm centre in medulla -R
Pneumotaxic centre in pons -RT
Chemosensitive area in medulla -`C_(1)`
Peripheral chemoreceptors in aortic arch and carotid artery -`C_(2)`
Find out the correct path for regulation of respiration.

Options

A. `C_(2) rarr R rarr RT rarr C_(1)`
B. `RTto underset(C_(1))underset(uarr)(R) larr C_(2)`
C. `C_(1) to underset(R)underset(uarr)(RT)to C_(2)`
D. `RT to underset(R)underset(uarr)(C_(2)) to C_(1)`

Answer

To find the correct path for the regulation of respiration in human beings, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Main Respiratory Center**:
- The primary respiratory rhythm center is located in the medulla oblongata, which is labeled as **R**. This center is responsible for generating the basic rhythm of breathing.

2. **Influencing Centers**:
- The **Pneumotaxic center** located in the pons, labeled as **RT**, plays a role in regulating the rate and pattern of breathing. It can influence the respiratory rhythm set by the medulla.

3. **Chemosensitive Areas**:
- The **Chemosensitive area** in the medulla, labeled as **C1**, detects changes in the chemical composition of the blood, such as levels of carbon dioxide and oxygen. This information is crucial for adjusting the breathing rate.

4. **Peripheral Chemoreceptors**:
- The **Peripheral chemoreceptors**, labeled as **C2**, are located in the aortic arch and carotid arteries. They also monitor blood chemistry and send signals to the respiratory centers to adjust breathing as necessary.

5. **Integration of Signals**:
- The respiratory center in the medulla (**R**) is influenced by the inputs from the pneumotaxic center (**RT**), the chemosensitive area (**C1**), and the peripheral chemoreceptors (**C2**). Together, these components work to regulate the respiratory rhythm according to the body's demands.

6. **Conclusion**:
- Therefore, the correct path for the regulation of respiration is: **C1 (Chemosensitive area) → C2 (Peripheral chemoreceptors) → RT (Pneumotaxic center) → R (Respiratory rhythm center in medulla)**.

### Final Answer:
The correct path for the regulation of respiration is: **C1 → C2 → RT → R**.

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