Like all other living things, humans also need oxygen to survive. Inspiration and expiration are the two events that make up human breathing mechanics (inhale and exhale). Inhaling air into the lungs is a function of the respiratory system and is referred to as inspiration. The act of exhaling involves expelling air from the lungs. Other unicellular species, like amoebas, breathe via their skin.
Stomata, which are little pores, allow plants to breathe. In order to produce energy, humans also breathe effectively. How can food provide us energy? An oxidative mechanism called respiration is used to release energy from food. To oxidize the meal and release energy and carbon dioxide, oxygen is taken into the tissue (from the lungs) throughout this process. To learn more about the human respiratory system, read the entire article.
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