Human Gaseous Exchange Essay

Humans are terrestrial but they don 't usually live wild in nature ,they make their own environment adapted to their needs, however humans have to live in a place where they can get consistent food supplies such as cow, pigs, chickens and plants. Oxygen and water is essential for human. Humans control their own competitors, predators, parasites, and diseases,humans require large and continual subsidies of energy, food, and other resources. These are needed in order to maintain the colonization of difficult environments and to continue the control of constraining ecological influences. Humans are naturally diurnal.

Humans need oxygen to create energy, all our cells have mitochondria which they create energy for our bodies in the form of ATP by the process of gas exchange. The process of gas exchange is achieved …show more content…
Theses bronchioles lead directly into the lungs and connect to the alveoli ( tiny air sac that allow gas exchange of oxygen and carbon dioxide takes place.) Because the lungs have no skeletal muscles of their own, so the work of breathing is done by the diaphragm, the diaphragm helps to pump the carbon dioxide out of the lungs and pull the oxygen into lungs. They are two very important adaptations in human gas exchange system that allows the human to survive successfully in their living environment. The first and most important part of gas exchange is the alveoli, alveoli are tiny membrane sacs that allow gas exchange of oxygen and carbon dioxide takes place. Alveoli have very thin permeable cell walls that are only one cell thick. Once the oxygen reaches the alveoli, it then diffuses through a single cell in an alveolus followed by a single cell in a capillary to enter the bloodstream. At the same time carbon dioxide is released from the capillary to the alveoli and then being released through exhalation. In order to make this