With a specific end goal to remain alive, the body needs to breath air. We breath in oxygen and we breath out carbon dioxide. This procedure is known as breath. Breathing happens consequently, consistently the body breaths around 20,000 times. When we achieve 70 years of age, that is around 600 million breaths. Such a lot of breathing happens on account of the respiratory framework, which incorporates the nose, throat, voice box, windpipe and lungs. At the highest point of the respiratory framework, the nostrils bring air into the nose where its separated, warmed and saturated. Minor hairs called cilia guarantee the nasal ways and distinctive parts of the respiratory tract and filter through clean and diverse particles that enter the nose through the breathed in air. Air can moreover be taken in through the mouth, the two aeronautics courses of the nose and mouth get together at the pharynx which is arranged at the back of the throat. The pharynx passes on both sustenance and air and is used for digestion and breath. One way is for sustenance – this is known as the throat which leads on to the stomach. The opposite side is for air – it’s known as the trachea. A little fold of tissue called the epiglottis covers the air just entry when we swallow. This prevents nourishment and fluid from going into the lungs. The larynx – or voice box – is situated at the highest point of the trachea – the air-just pipe. The trachea or windpipe which is a 2cm to 3m tube than broadens downwards from the base of the larynx for around 12 cm. The dividers of the windpipe are made solid by hardened rings of ligament that keeps it open. The trachea is additionally fixed with small hairs. They clear remote particles and fluids out of the aeronautics course, protecting them from entering the lungs. The windpipe allotments into two branches and each and every one of these enters one of the two lungs of the body. Each branch takes after the members of a tree isolating into more diminutive, better branches called bronchioles. The bronchioles end in little air sacs which called alveoli which looks to some degree like grapes. These structures empower natural air to get to the air sacs which are encompassed by the veins, or vessels. The oxygen experiences these air sacs, and experiences the hair like dividers into the circulatory framework. Meanwhile, carbon dioxide trades from the circulatory framework into the air sacs, where it gets breathed in out of the body.