Do Now: Work with your elbow buddy Partner 1: Blow up balloon using 1 normal breath. Partner 2: Measure circumference (distance around middle). Compare with your table. Now do the same with a BIG breath.

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. Remember: respirad means breathing Oxygen Carbon Dioxide

Respiration: What is it? 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. oxygen + sugar Energy and carbon dioxide

Do Now: Describe what is happening in this picture. Use these terms: lungs, arteries, veins, blood cells, body cells, heart, oxygen and carbon dioxide. Use scientific vocabulary.

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

Do Now: On p. 28 of your packet, sequence the pathway of air as it flows from outside the body to the alveoli

Do Now: On p. 18 of your packet, sequence the pathway of air as it flows from outside the body to the alveoli. As air travels from outside, it travels through the nose, pharynx, larynx, trachea and bronchi and bronchioles to the alveoli resp system w test Resp system animation (pharynx) http://www.youtube.com/watch?v=yWnlhcqJlRk start at 9min

Breathing – it is not the same as respiration Breathing is moving air in and out of your lungs. http://www.broncus.com/patients.asp one direction

The diaphragm http://www.phschool.com/webcodes10/index.cfm?fuseaction=home.gotoWebCode&wcprefix=cbp&wcsuffix=0373

The alveoli The alveoli are tiny air sacs in the lungs

Gas Exchange in the Lungs kids health gas exchange

Inside the Lungs (c)The surface of the alveoli

anatomy of breathing http://www.dnatube.com/video/6094/Gas-Exchange-in-the-Lungs

AnatomyofBreathing http://www.phschool.com/atschool/phsciexp/active_art/respiratory_system/index.html http://www.youtube.com/watch?v=0yjLJfz6saU