MA+Gas+Exchange+Project

=Research: http://www.sk.lung.ca/content.cfm?edit_realword= hwbreathe= You inhale through your mouth or nose(most of the time nose) the air goes into the trachea(hard tube that you can feel in front of neck). The air then splits up into the bronchial tubes into your lungs. They break up into smaller and smaller tubes into the air reaches the alveoli. This is where blood reaches and takes the oxygen from the air we breath. While this is happening blood also gets rid of carbon dioxide and this leaves our body when we exhale. The lungs are like sponge so there is enough surface area for blood and air to meet and for this exchange to occur.

Breathing: exhalation and inhalation of breath, respiration, http://dictionary.oed.com/cgi/entry/50027084?query_type=word&queryword=breathing&first=1&max_to_show=10&sort_type=alpha&result_place=1&search_id=u2PQ-jo1CJV-19965&hilite=50027084 http://www.bbc.co.uk/health/images/300/asthma_breathing.jpg

ttp://whsc.emory.edu/_pubs/momentum/2007winter/images/breathing_2transplant.gif

http://www.shef.ac.uk/janedavidson/breathing.jpeg

http://www.webmd.com/asthma/how-we-breathe : -we breath about 20 times per minute -the act of breathing is supported by the diaphragm, when you breath in the diaphragm expands allowing air to enter the lungs and when you exhale the diaphragm relaxes and the air exits lungs

media type="file" key="mapracticemovie.mov"

Script: Anne Parkes: Hey Massey, what is breathing Massey: Breathing is when we inhale breath to give our body oxygen and then we exhale carbon dioxide. Anne Parkes: Where does the breath go? Massey: Well it goes down the nasal passageways or through your mouth then down your layrnx, esophagus, and trachea which then leads to the lungs Anne parkes: what happens when the air gets into the lungs? Massey: There are a lot of passage ways in the lungs called bronchiol tubes and then into air sacs called alveoli. This is where blood comes to pick up the oxygen you just inhaled in your breath.