How does the blood change in 3 systems of circulation?

The blood undergoes various changes as it passes through the three systems of circulation: the pulmonary circulation, the coronary circulation, and the systemic circulation. Here are the changes observed in each system:

1. Pulmonary Circulation:

- Oxygenation: In the pulmonary circulation, the blood flows from the heart to the lungs. During this process, it undergoes oxygenation, where carbon dioxide is released, and oxygen is acquired from the lungs. The oxygenated blood then returns to the heart.

- Decrease in Carbon Dioxide: As the blood passes through the pulmonary capillaries, it loses carbon dioxide, which diffuses out of the blood into the alveoli. The amount of carbon dioxide in the blood decreases.

2. Coronary Circulation:

- Myocardial Perfusion: In the coronary circulation, the blood flows from the heart's main arteries (coronary arteries) to the heart muscle tissue (myocardium). This circulation ensures that the heart receives a constant supply of oxygen and nutrients.

- Metabolic Exchange: As the blood flows through the coronary capillaries, it provides oxygen and nutrients to the cardiac muscle cells. At the same time, carbon dioxide and metabolic waste products are removed.

3. Systemic Circulation:

- Oxygen and Nutrient Delivery: The systemic circulation carries oxygenated blood from the heart to all tissues and organs of the body. It ensures the distribution of oxygen and nutrients essential for cellular function.

- Carbon Dioxide and Waste Product Removal: As the blood flows through systemic capillaries, it picks up carbon dioxide and metabolic waste products from the tissues. These substances diffuse out of the cells into the capillaries.

- Deoxygenation: The oxygenated blood that leaves the heart gradually loses oxygen as it travels through the systemic capillaries, delivering it to the tissues. As a result, the oxygen content of the blood decreases.

In summary, the blood changes in the pulmonary circulation include oxygenation and a decrease in carbon dioxide. The coronary circulation allows for the perfusion of the heart muscle with oxygen and nutrients. The systemic circulation delivers oxygen and nutrients to all body tissues while removing carbon dioxide and metabolic waste products. These changes are essential for maintaining the body's overall function and homeostasis.