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Muscles and movement
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Muscles can only …… the bone so they work in pairs to create ………… …………
Pull, antagonistic action
What is antagonistic action?
Where muscles work in pairs so that when one relaxes, the other contracts and pulls the bone allowing us to move our bones.
Smooth muscle:
Contracts/ relaxes slowly
Doesn't get tired
e.g. lines the intestines, blood vessels, in the airways of the lungs
Skeletal muscles:
They cause movement a the joints
attached to bones by tendons
made of long fibres of many cells that have fused together
Contract quickly but soon get tired
eg calfs, arms
Cardiac muscles:
Has branching fibres
this muscle keeps the heart beating
never gets tired
Author
taracullen
ID
320693
Card Set
Muscles and movement
Description
science
Updated
2016-06-02T18:56:25Z
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