Chapter 1 Lesson 2 System Interactions - as253.k12.sd.us

Chapter 1 Lesson 2 System Interactions

Ms. Schreurs 7th Grade Life Science Human Body Systems

How Do You Move?

? Skeletal System (skeleton)= ___________________________ ___________________________

? ______________= attached to the bones of your skeleton and provide the force that moves your bones

? Muscles can contract and relax

** Muscles and Bones work together to help you move**

"Show Me Your Muscles"

Which muscles are contracted, which are relaxed?

Joints

? Joint= ________________________ ______________________________

Try This!

Stand on one leg with the other bent

? Which muscles are you using? Which are contracted, and which are relaxed?

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