son's7th grade homework
2006-06-08 01:47:43 · 5 answers · asked by Naomi B 1 in Education & Reference ➔ Homework Help
The respiratory system starts with the nose and mouth where we breathe in oxygen and expel carbon dioxide. The oxygen travels down the windpipe(trachea) and into the bronchi contained in each lung. The windpipe splits into two bronchi which go into each lung. Each bronchi spreads into smaller structures called bronchioles. These spread through each of the lungs. Each bronchiole has a number of smaller structures known as alveoli. The alveoli have a very large surface area and is where gas exchange occurs. Oxygen replaces carbon dioxide and is taken to all parts of the body via the bloodstream. Carbon dioxide is toxic to humans in high concentrations which is why it is breathed out.
The main structures are nose, mouth, windpipe, lungs, bronchi, bronchioles, alveoli.
2006-06-08 02:02:22 · answer #1 · answered by julezw 2 · 0⤊ 0⤋
Wow, if his parents can't spell Respiratory, the boy's got no chance. My advice is kill yourselves and send him to an orphanage, though not necessarily in that order.
2006-06-14 11:30:35 · answer #2 · answered by Kango Man 5 · 0⤊ 0⤋
mouth/nose > wind pipe (trachea) > lungs (bronchi > bronchioles > alveoli)
and if you want to continue from there..
capillaries > veins > pulmonary vein > heart > etc..
2006-06-08 02:12:16 · answer #3 · answered by Nikoru 4 · 0⤊ 0⤋
Some nice pictures:
http://connection.lww.com/products/stedmansmedict/primal/primal_25.jpg
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/humrespsys_1.gif
http://www.ama-assn.org/ama1/pub/upload/images/446/respiratorydetail.gif
2006-06-08 20:36:09 · answer #4 · answered by Bart H 3 · 0⤊ 0⤋
look it up on the net
2006-06-10 14:33:22 · answer #5 · answered by bty541233 2 · 0⤊ 0⤋