2.  exchange gases
throughout the
body
 helps breathe
 gives oxygen to
cells
 our blood needs
oxygen

3.  it makes voice
sounds
 organ in the neck
of mammals

4.  the windpipe is
the passage
 passage for larynx
to lungs

5.  tiny air sacs
 located inside the
lungs

6.  bronchus is a tube
 connects trachea
with lungs

7.  A tube in the lungs
 Branches off the
bronchus

8.  the essential
respiration organ
 Every living animal
have lungs

9.  main muscle of
respiratory system
 shaped like a
parachute

10.  http://www.lung.ca/children/grades4_6/respiratory/why_we_breathe.html
 http://lung.ca/children/grades7_12/respiratory/respiratory_system.html
 http://42explore.com/respsyst.htm
 http://;obray.thinkquest.org/5777/resp1.htm
 http://kidshealth.org/parent/general/body_basics/digestive.html
 http://hes.ucfsd.org/gclaypo/repiratorysys.html
 http://courses.washington.edu/conj/resp/respairw.htm
 http://www.swankpets.com/images/Trachea%20anatomy.jpg
 http://www.naturalhealthschool.com/img/trachea.gif
 http://www.nlm.nih.gov/medlineplus/ency/images/ency/fullsize/19072.jpg
 http://www.syvum.com/iosundry/squizzes/biology/passage_of_air.jpg