SCIENCE GRADE 4 MUSCLES

Our muscles contract or shorten, and . . . to allow us to move.

• relax

• move

• contract

Our skeletal muscles work in pairs. An examples is the biceps and triceps in our . . .

• upper arms

• face

• neck

A muscular organ which contracts and relaxes non-stop to kep us alive is. . .

• lungs

• brain

• heart

When our biceps contract or shorten, the pull up the bone in our lower arms. This allows our arm to . . .

• bend

• straighten

• move

Not all muscles are joined to bones . The example is . . .

• stomach

• rib

• upper arm

Are these statements true or false?

muscles allow us to move

• true

• false

Are these statements true or false?

muscles move bones by pushing them

• true

• false

Are these statements true or false?

all muscles in our body are joined to bones.

• true

• false

Are these statements true or false?

biceps and triceps are skeletal muscles

• true

• false

Made up of tough and elastic are function . . .

• skeleton

• muscles

• brain