What are the main factors that affect normal breathing?

Breathing

1. The respiratory rate is mostly controlled by the brain.
2. Sensors that monitor oxygen and carbon dioxide levels in the blood provide input.
3. Respiratory rate is influenced by blood pH, which is a reflection of its relative acidity or alkalinity.
4. Other key elements that affect respiratory rate include activity level and the presence of medications or alcohol.
5. Stretching of the thoracic walls and lungs, a drop in H⁺ and carbon dioxide levels, and an increase in oxygen level all limit normal breathing.
6. The relaxation of the thoracic walls and lungs, as well as a decrease in oxygen levels and an increase in carbon dioxide and H⁺ levels, all contribute to normal breathing.

The following are the primary factors that influence regular breathing:

1. Carbon dioxide concentration in the blood.
2. H⁺ concentration in the blood.
3. Stretching of the thoracic and pulmonary walls.
4. Oxygen saturation in the blood.