The Respiratory System Why do astronauts wear space suits and carry oxygen when they go out in space? Why do deep sea divers take oxygen with them on a.

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Presentation transcript:

The Respiratory System Why do astronauts wear space suits and carry oxygen when they go out in space? Why do deep sea divers take oxygen with them on a dive?

The Respiratory System Functions The respiratory system moves oxygen from the outside environment into the body. It also removes carbon dioxide and water from the body.

Respiration: What is it? oxygen + sugar Energy and carbon dioxide Respiration is the process by which oxygen and glucose (sugar) go through a chemical reaction inside cells. The chemical reaction releases energy that the cell uses.

Breathing – it is not the same as respiration Breathing is moving air in and out of your lungs. atients.asp atients.asp

Air Air is made up of a mixture of gases. 21% oxygen 78% nitrogen 1 % carbon dioxide, helium and other gases. What is most of the air you breathe?

The Path of Air As air travels from outside, it travels through the nose, pharynx, larynx, trachea and bronchi and bronchioles to the lungs (pharynx)

The alveoli The alveoli are tiny air sacs in the lungs

Gas Exchange in the Lungs animation of gas exchange

Inside the Lungs

The diaphragm n=home.gotoWebCode&wcprefix=cbp&wcsuffix=0373

AnatomyofBreathing active_art/respiratory_system/index.html