Muscles (4Bh3, 4Bh4)

True or False: Muscles can respond to signals from the brain

• True
• False

Muscles can __________to move bone

• Get smaller

• tighten

• bigger

Skeletal muscles are attached to _________.

• organs
• heart
• bones
• lungs

What allows your bones to move?

• They are attached to muscles
• They can move on their own

Muscles work

• in pairs
• by themselves

A muscle that contracts...

• shortens
• lengthens

A muscle that relaxes...

• shortens
• lengthens

Which of these best describes how muscles work?

• One muscle contracts and another muscle relaxes
• One muscle contracts
• One muscle relaxes
• Two muscles contract

What are muscles like?

• rocks
• rubber bands
• water