Mouth - take in air
Nose -takes in air and lined with mucus membranes and hairs to filter particles out, the blood also warms the air (remember air then goes through the pharynx/larynx - Saturday)
Pharynx - throat, connects the mouth and nose to larynx,
Larynx - voicebox, connects the pharynx to the trachea
Trachea - tubular and ridged with cartilage. allows air to get to the lungs and the rings prevent it from closing. In front of the esophagus.
Bronchi (2) - tube structure with cartilage to bring O2(and get rid of CO2) to/from both lungs. more ridged.
Bronchioles - lots of them, made of smooth muscle, tube structure. to get air to entire lung.
Aveoli - stretchy air sacs with lots of surface area "bunch of grapes." where gas exchange happens. high surface area allows for more exchange, while the stretch allows for expansion when filled with gases. Single Cell layer thick. Over 300 million
Lung - lobed structure.
Diaphragm - wall of muscle that separates thoracic cavity from abdominal cavity, involved in inhaling (contracts) and exhaling (relaxes).
We also discussed how alveoli are covered in Pulmonary Capillaries (single cell thick blood vessels) that bring CO2 rich blood to the lungs, while taking O2 rich blood to all cells of the body. Can you explain what is happening in this picture?
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