Practice worksheet

1. Column of bones that support the body is called _______________________

• skeleton
• muscles
• back bone
• none of them

2. What muscle is the arrow pointing to?

• biceps
• traps
• pecs
• triceps

3. Animals that have backbone are called _____________

• Vertebrates
• Invertebrates
• Muscles
• None of them

4. The skull protects the ____________

• lungs
• heart
• brain
• spine

5. Which diagram shows the skeleton of a human?

• A
• B
• C
• D

6. Many invertebrates have a skeleton that is on the outside of their bodies is called _____________

• exoskeleton
• skeleton
• backbone
• none of them

7. When you straighten your arm, your triceps muscle __________ and your biceps muscle______________

• relaxes, contract
• contract, relaxes
• contract, contract
• relaxes, relaxes

8. The hard parts inside the body that form the skeleton are called ________________

• back bone
• spine
• bones
• skull

9. ____________ protects our lungs and heart.

• skull
• rib cage
• spine
• jaw

10. The spine supports the ______________ part of our body.

• lower
• upper
• both
• none of them