How Do the Skeleton and Muscles Work Together?

Which statement is true about muscles?

• muscles do not move

• muscles work in pairs

• There are more than 1000 muscles in the human body

Will the biceps in the arm contract or relax to bend his arm?

• The biceps will relax

• The biceps will contract

Sam is a lazy boy. He doesn't like to do any physical activities, and his muscles don't move a lot. What do you think will happen to Sam's muscles after some time?

• The muscles become bigger and stronger

• The muscles become smaller and weaker

• Nothing will happen to Sam's muscles

When our hamstrings contract, our quads______

• relax

• expand

• contract

There are approximately 800 muscles in the human body.

• true

• false

Muscles are not found in our hearts and lungs.

• true

• false

Skeletal Muscles are muscles that don't work with your bones.

• true

• false

_________attaches muscles to bones.

• joint

• tendon

The muscles in our heart, stomach and intestines are ___________.

• not joined to bones.

• joined to bones.

Animals with skeletons have muscles joined to their bones .

• True

• False