According to BoogieWipes.com, boogers form because the sinuses and nose secrete mucus to prevent illness and infection by keeping dirt, dust and pollen from entering the lungs. Boogers can either be sticky or dry.Know More
When an irritant like pollen or a germ gets sucked into the nose, tiny hairs called cilia trap it. The cilia move the whole irritant toward the back of the throat while mucus forms around the cilia. According to KidsHealth, the trapped particles and the mucus become a booger when they clump together and dry out.
There are different qualities of boogers. Some are slimy due to colds, allergic reactions or exposure to harsh smells and chemicals. People who live in dry, dusty climates make drier boogers than those who in live in more humid places.
It takes a good bit of mucus to stay healthy. In fact, most swallow about a quart of mucus a day. To make sure the body has enough mucus to make boogers, it is important to stay hydrated. Mucus is mostly made up of water, and people who drink enough water make as much as 2 quarts of mucus a day. The best way to clean up boogers is with a tissue.Learn more about Human Anatomy
Gas exchange occurs in the alveoli of the lungs, as well as in the capillaries that surround the alveoli, explains Teach PE. The exchange of gases in these two regions occurs through the process of diffusion, whereby oxygen and carbon dioxide move from higher-concentration areas to lower-concentration areas.Full Answer >
The heart draws oxygenated blood from the lungs and distributes it to the rest of the body using a system of arteries and veins. Small coronary arteries and the pulmonary veins provide oxygenated blood into the heart. The pulmonary artery then pumps deoxygenated blood to the lungs where it is resupplied with oxygen.Full Answer >
In the respiratory system, gas exchange occurs between the alveoli in the lungs and the capillaries. Alveoli are small cavities lined with thin membranes. The cavities expand and contract as a person breathes. Humans have approximately 300 million alveoli in their lungs, advises Eastern Kentucky University.Full Answer >
Ventilation-perfusion coupling is the relationship between the amount of air reaching the air sacs of the lungs and the amount of blood reaching the lungs. It is common to express ventilation and perfusion together as a ratio.Full Answer >