Muscular System

The human body has about ____________ muscles, some that never stop moving

The ____________ system helps the human body move. Sometimes this movement can mean moving things _________ the body or moving the body from place to place.

Muscles can be found as different ____________ and ____________. They are made of lots of pieces of elastic tissue and make up about 50% of our body weight.

Muscles work by _________ or shortening. They cause movement by ________ on something such as bone

There are _____ types of muscles

Skeletal muscles: these muscles are attached to the __________

Sleletal muscles are __________muscles, which means you _________ the movement such as kicking a soccer ball.

smooth muscles: these muscles are also _____________

Smooth muscles: this type of muscle is found in the _______

It is important to keep your muscles _________ and __________