![]() ![]() Nose bleeds can also happen on their own, because of changes in air pressure or because the vessels inside the nose can be a bit leaky. Nose bleeds often happen when a person bangs their nose on something, causing the blood vessels in the nose to break. Then, blood flows out of the blood vessels and onto your skin. Dirty jenga skin#When you fall over and scrape your skin, the tiny blood vessels under your skin break. ![]() But sometimes things go wrong! Examples of problems with the blood include cuts and blood clots. To keep the blood inside, the blood vessels are lined with tiny flat cells called endothelial cells, which act as barriers to stop the blood from leaking out. It is important to keep blood flowing through the blood vessels because blood keeps the body working normally. For example, blood flowing to your brain allows you to think, blood flowing to your legs allows you to walk, and blood flowing to your mouth allows you to talk and eat. The blood flow allows the body’s muscles and organs to do their jobs. These cells contain a red protein called hemoglobin. Oxygen travels in the blood on mini life rafts called red blood cells. ![]() One reason the blood flows through the blood vessels is to take food and oxygen to various parts of the body. Blood flows through blood vessels like water flows through a hose pipe. The movement of blood is called blood flow. Bloodīlood moves through the body inside bendy tubes called blood vessels. Doctors and scientists are working together to stop bleeding and blood clots and to help people recover from blood illnesses. Too much bleeding and blood clots are unhealthy. Healthy blood and scabs are good for our wellbeing. We will also tell you how doctors and scientists can help with problems of the blood. So, what happens when you bleed? And what happens if blood flow is blocked? In this short article, we will explain how and why blood is good. But blood is needed to keep our bodies alive and well. People think blood is bad because they see it when they hurt themselves, when people are sick at hospital, and in scary movies. Blood is the liquid that looks red when you cut or scrape your skin. ![]()
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