Question

What stimulates you to breathe?

Answer 1

Breathing:

1. Breathing is the process of respiration in which air is breathed into the lungs via the mouth or nose as a result of muscle contraction and subsequently expelled as a result of muscle relaxation.
2. The autonomic nervous system regulates breathing.

Breathing stimulation:

1. The major parameters for breathing control are carbon dioxide and hydrogen ion concentration.
2. Normally, the biggest incentive to breathe more deeply and often is a rise in carbon dioxide concentration.
3. Increased CO₂ concentration in the blood lowers the pH of the blood and stimulates the brain's respiratory center to increase the pace and depth of breathing.
4. There are receptors in the aortic arch, carotid artery, and near the respiratory rhythm center in the medulla that sense changes in CO₂ and H⁺ concentrations and relay the signal to the rhythm center for action.
5. The pons region's pneumatic center controls respiratory rate by changing the length of inspiration.