the pathway of air is in and out. we need oxygen because with out oxygen we would not be able to talk.
Thursday, January 31, 2008
Respiratory system
the pathway of air is in and out. we need oxygen because with out oxygen we would not be able to talk.
Digestive System
The body digestive the food you eat and macs it small so it can go down your stomach. First is the moth, esophagus, intestines,and the anus.
how is the body organized
the body is organized :
1Molecules
-water
-protein
-sugars -
-fats
2Cells
-cells are made up of organelles
-nucleus
-cell membraine
-mitocondria
-chloroplast
-we have about 5 billion cells in our body
3Tissues
-a groop of cells that look a like and worck toogether
-muscletisoe-mackes up micsls
-tissu can shorte-couering tissues
-skin
-epithilia
-protects your bodyss connectiv tisssu
-holdes your body together
-bone
-blood
-nerv tissu
-cary messeges and cells
4Organs
-groop of tissu working together to do a job
-heart
5Organ Ssystem
-orgens that work togethor
-each organ systom carryies out a life proc
Thursday, January 24, 2008
Muscular system
How many muscles are in your body? We have 500 muscles in are body. win one diys a new one grows. they all so split wan you are doing asirsiys.
Skeletal system
How many bines are in your body. Abot 260 bines are in your body. That is a lot of bines. babs have las bines thin us because they havein gron Than owirs. So thair hans band muor thin us.
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