What changes in the composition of blood take place lungs?

The changes in the composition of blood that take place in the lungs are as follows:

1. Oxygenation of blood: In the lungs, blood is exposed to oxygen-rich air in the alveoli. The oxygen from the air diffuses into the blood, increasing the oxygen content and converting it from deoxygenated to oxygenated blood.

2. Carbon dioxide removal: During respiration, carbon dioxide, a waste product of metabolism, diffuses out of the blood into the alveoli. This process helps to eliminate carbon dioxide from the body.

3. pH balance: The lungs play a role in maintaining the pH balance of blood. When carbon dioxide levels in the blood increase, it can cause the pH to become more acidic. By removing carbon dioxide, the lungs help regulate the pH of blood and prevent acidosis.

4. Gas exchange: The exchange of oxygen and carbon dioxide takes place through diffusion across the thin walls of the alveoli and the capillaries in the lungs. This gas exchange process ensures a constant supply of oxygen to the body and the elimination of carbon dioxide.

5. Hemoglobin binding: In the lungs, oxygen binds to hemoglobin in red blood cells, forming oxyhemoglobin. This allows for the transport of oxygen throughout the body.

These changes in blood composition are crucial for maintaining the body's oxygen and carbon dioxide balance and supporting overall homeostasis.