Breathing delivers oxygen to our body and extracts carbon dioxide produced by the body.
The Upper Respiratory Tract – Nose and Nasal Cavity, Pharynx, Larynx.
Lower Respiratory Tract – Larynx, Trachea, Bronchi/ Bronchioles, Alveoli.
Cilia – Used in the nose is used for the filtration of air.
Pharynx -Muscular tube that lies behind the nose and mouth.
Larynx – Also known as the voice box or Adams apple.
Trachea – Made of c shaped rings, connects the Pharynx to the Bronchi
Bronchi/ Bronchioles – dividing tubes inside the lungs, increases the surface area of the lungs
Alveoli – Small grape like structures where the gas exchange happens inside the lungs
Heart receives deoxygenated blood from the body. Heart pumps blood to the lungs. The lungs remove the waste gas carbon dioxide and replaces it with oxygen. Oxygenated blood is pumped back to the heart and then pumped around the body
The blood vessels in the lungs border the Alveoli. The gas exchange process happens through this wall.