A4.1.1.PathBloodF

alveoli – small, hollow air sacs inside your lungs. inhalation – is the process in which the air enters the lungs. exhalation – is the process in which the air leaves the lungs. breathing – moving air in and out of the lungs. diaphragm – a muscle that separates the chest from the abdomen, helps to also force air out of the lungs ................
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