Lungs-a muscle that takes up most of the space in your chest, the most important part that helps you breath

Diaphram- a thin dome shaped muscle that helps you breath and separates the lungs from the stomach and intestines

Parts

Trachea- your windpipe

Alveoli- tiny air sacs in your lungs

Epiglottis- a flap of elastic cartilage that allows air to pass through the trachea but not solid objects or liquid