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6th Muscles & Joints

Muscles and Joints

The organs of the muscular system are _________ muscles
There are about _________ muscles in the human body. 650
What are three kinds of muscles in the human body? skeletal muscles smooth muscles cardiac muscle
_____________ muscles are attached to bones. skeletal
__________ are thick stretchy bands that attach skeletal muscles to bones. tendons
Tendons are thick stretchy bands that attach skeletal muscles to bones.
Skeletal muscles are ________________ muscles. You control them by thinking. voluntary
Muscles move bones by _____________ them. pulling
Muscles never _________ bones. push
When a muscle pulls a bone it ___________. (gets shorter) contracts
When a muscle contracts it gets ______________ shorter
A muscle that causes a body part to bend is called a _________. flexor
A muscle that causes a body part to extend (straighten) when it contracts is called an . extensor
Most skeletal muscles work in ________. One muscle pulls the bone in one direction; the other muscle pulls in the opposite direction. pairs
______________ muscle is found inside some internal organs such as the stomach and intestines. smooth
Smooth muscle is _____________________ – you cannot control them with conscious thought. involuntary
_______________ muscle is found in the heart. cardiac
Cardiac muscle is ___________________ involuntary
A sprain is a stretched or torn __________________. ligament
Which joints are more likely to suffer a sprain? ankle, wrist, and knee joints.
A _________________ is caused by stretching a muscle or tendon too far. strain
 



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