The Respiratory System

There is around 4% of every breathe that the body intakes the oxygen is absorbed into the blood. There are two body systems that are involved in the getting the oxygen and energy into the blood, respiratory and digestive system.
The role of a respiratory system goes through many steps before the oxygen gets into the blood. The first step is when the air enters the nose and mouth and travels down into through the pharynx, larynx and towards the trachea. After it pasts the trachea, the air will travel through two tubes that work towards the two lungs, the tubes are called bronchi, after the air reaches the bronchi it will make its way towards the alveoli via the bronchioles. The alveoli are the place where gas exchange happens, gas exchange
You cannot affect the metabolic rate through the respiratory system. Although the respiratory system is a body system on its own, it is linked to other systems and helps them function. The circulatory system is one of them systems. Both systems are responsible for making sure that the blood is rich in oxygen while flowing through the body. The respiratory system give the support to the circulatory system with oxygen and air that is been sent to the relative organs (e.g, lungs) thru the arteries. After that the veins will transport the deoxygenated blood to the heart to continue the process of cleansing the blood and providing
The food will start breaking down into tiny pieces with the help from the salvia in the mouth which is known as amylase. The food will then be swallowed and will start to travel down the oesophagus via the pharynx. To stop the body from choking on the food there is a flap called the epiglottis that closes over when the body starts to swallow. After that the process which is known as peristalsis which is the muscular movement that happens and will repel the food through the oesophagus and towards the stomach. When the food enters the stomach a mucous substance plus pepsin which is pepsinogen/ protease – enzymes will break down the proteins that is inside the food into amino acid and the hydrochloric acid will break the food down furthermore. After the food is broken down into the smallest of pieces it will enter the small intestine which is called the duodenum while the bile is released to assist with breaking down the fats. After the broke up food has moved past the duodenum the food like stuff will enter the small intestine where the process of absorption takes place and into the bloodstream. Villi covers the bottom of the small intestine and this is where capillaries will be found and this is where the glucose will move into the bloodstream along with the other substances such as amino