Fill in the gaps... breathing mechanism?
Air moves from high pressure to low pressure. During breathing in low pressure is created in the chest so that a__________ pressure forces air into the lungs. During breathing out, high pressure must be created in the chest so air is forced out of the lungs. The lungs do not contain muscles so they cannot move themselves. They therefore rely on other strctures to produce the p_______ changes.
The Elasticity of the Lungs: The lungs are s________ during breathing in so when the diaphragm and intercostal muscles raise, the lungs recoil pushing air out, like a balloon.
answers or possibilities would be much appreciated x)
thankyou. x