Respiratory center. The respiratory centers (RCs) are located in the medulla oblongata and pons, which are parts of the brainstem. The RCs receive controlling signals of neural, chemical and hormonal nature and control the rate and depth of respiratory movements of the diaphragm and other respiratory muscles.

Respiration Control Centre:
The respiration control center is a region of the brain that regulates the process of breathing. It is responsible for controlling the rate and depth of breathing in response to various stimuli. The respiration control center is located in the brainstem, specifically in the medulla and pons.

Location in the Brain:
The medulla oblongata and pons are two parts of the brainstem. The medulla is located at the base of the brain, just above the spinal cord, and the pons is situated above the medulla. Both of these regions play a crucial role in regulating respiration.

Medulla:
The medulla contains the primary respiratory centers that control the basic rhythm and rate of breathing. These centers are known as the dorsal respiratory group (DRG) and the ventral respiratory group (VRG). The DRG is responsible for initiating the inhalation process, while the VRG is involved in both inhalation and exhalation. These centers receive sensory information from chemoreceptors, which monitor the levels of oxygen, carbon dioxide, and pH in the blood, as well as from stretch receptors in the lungs and chest wall.

Pons:
The pons contains the pneumotaxic center and the apneustic center, which are responsible for fine-tuning the breathing process. The pneumotaxic center helps regulate the depth and rate of breathing by inhibiting the inspiratory centers in the medulla. The apneustic center, on the other hand, stimulates the inspiratory centers, prolonging inhalation and increasing the depth of breathing.

Integration and Coordination:
The medulla and pons work together to integrate sensory information and coordinate the muscles involved in breathing. The sensory input from chemoreceptors and stretch receptors is processed in the medulla and pons, and appropriate signals are sent to the diaphragm and intercostal muscles to adjust the breathing pattern. This coordination ensures that the body receives sufficient oxygen and eliminates excess carbon dioxide.

Conclusion:
In conclusion, the respiration control center is located in the medulla and pons of the brainstem. These regions play a vital role in regulating the rate, depth, and rhythm of breathing. The medulla houses the primary respiratory centers, while the pons fine-tunes the breathing process. The integration and coordination between these regions ensure the efficient exchange of gases in the body.

Ans is "C"