Respiration is one of the metabolic processes that all living beings need to survive.
Respiration is a chemical reaction in which oxygen is used to break down glucose and provide energy for cellular functions.
The human respiratory system is a collection of organs that allows humans to breathe oxygen and exhale waste gases, including carbon dioxide, from the body.
Inhalation and expulsion of gases, gas exchange between bloodstream and lungs, gaseous exchange between bloodstream and body tissues, olfaction, and vocal cord vibration are all vital processes of the respiratory system.
The respiratory system's role is to breathe in oxygen for respiration, which produces energy from food, and to exhale carbon dioxide.
The respiratory system consists of the nasal cavity which contains hair and mucus for protecting harmful substances and irritants even dust particles, viruses, and bacteria.
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