Ribcage - Physical protection to the lungs and heart. Also an airtight chamber, Intercostal muscles - Moves the ribcage during breathing, Pleural membranes – Lines the inner wall of the chest and outer surface of each lung, Pleural fluid - Prevents friction between the lungs and ribs when breathing, Diaphragm - Separates the thorax from the abdomen. Contraction and relaxation of muscle changes volume in thorax, Trachea - Carries air down the throat Trachea - Carries air down the throat, C-shaped hoops of cartilage help hold trachea open, Bronchi – tubes which branch off the trachea and take air further into the lungs, Bronchioles – tubes which branch off the trachea and take air further into the lungs Bronchioles – tubes which branch off the trachea and take air further into the lungs , Alveoli - Site of gas exchange Alveoli - Site of gas exchange , Epiglottis - Prevents food entering trachea Epiglottis - Prevents food entering trachea .

Thorax structure

by
Print
Embed

Leaderboard

Visual style

Options

Switch template

Continue editing: ?