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body systems
2020 body systems, 7th grade science, ga, Cousins Middle school
Term | Definition |
---|---|
cell | smallest unit of life |
tissue | similar cells working together |
organ | similar tissues working together : example heart, kidney |
organ system | a group of organs that work together, example cardiovascualr, |
cardiovascuar/circulatory system | moves blood, sends oxygen, food and water |
excretory system | removes waste |
respiratory system | exchanges gas (oxygen and carbon dioxide) |
skeletal system | gives shape and protection |
reproductive system | makes more of a living thing |
muscualr system | attach to bones, responsible for movement |
nervous system | sends messages includes brain and spinal cordq |
integumentary system | first line of protection, includes hair , skin and nails |
immune system | helps defend against illness, includes white blood cells |
endocrine system | uses hormones to control longterm body funcitons |