1. Pulmonary circulation moves blood between the heart and the lungs. It transports deoxygenated blood to the lungs to absorb oxygen and release carbon dioxide.
While the Systemic circulation moves blood between the heart and the rest of the body. It sends oxygenated blood out to cells and returns deoxygenated blood to the heart.
2. When a vein is torn or severed, the blood that flows out will be dark red or bluish. That's because it no longer has oxygen. Plus, since venous blood is moving to the heart, it's under less force than arterial blood. It will “ooze” like a thick liquid, flowing steadily out of the body.
3. Eating too much saturated fats in your diet can raise "bad" LDL cholesterol in your blood, which can increase the risk of heart disease and stroke.
4. Sometimes, the body needs to adjust the breathing rate. Receptors in the brain detect low oxygen or high carbon dioxide and send signals to the body, which can change the breathing rate. Having an abnormal respiratory rate can indicate a variety of things.
