human respiratory system lungs anatomy |
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| navigate by keyword : organ limb red head mouth nose poster pattern drawing orange respiratory anatomy lung respiration trachea coronavirus alveoli biology medical pneumonia medicine human science chest disease covid19 breath internal oxygen patient health care illness treatment virus ray infection scientific inhale bronchial asthma smoking throat tract allergy nasal symptoms bronchitis rib bronchi larynx exhale hospital exercise pandemic xray healthcare responsible exchange carbon dioxide body external environment consists key components lungs playing central role |
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| The human respiratory system is responsible for the exchange of oxygen and carbon dioxide between the body and the external environment. It consists of several key components, with the lungs playing a central role. |
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