Respiratory system

• The oesophagus is our digestive system and the trachea is our respiratory system
• The pharynx is where the back of the nose and mouth meet up
• The larynx, AKA voicebox is surrounded by rings of cartilage
• The trachea is also known as the windpipe
• Air travels down the trachea before it reaches the lungs
• Lungs are the organ where gas exchange takes place
• Lungs are covered with a thin membrane called pleura
• The left and right bronchus are at the end of the trachea. These send air into the lungs.
• Each bronchus divides into smaller paths called the bronchioles
• Alveoli are the sacs at the end of bronchioles.
• Alveoli are covered in capillaries, where gas exchange takes place
• Gas exchange is oxygen for carbon dioxide
• When our diaphragm relaxes, air comes into our lungs
• When our diaphragm contracts, air gets pushed out
• Gas exchange: Red blood cells go into your capillaries, carbon dioxide (waste) gets pushed out of the body through alveoli, and the alveoli pushes oxygen into your bloodstream