Your heart, liver and lungs are protected by what bones:

• sternum and ribs

• tendon and joint

• cartilage and vertebrae

• skull and mandible

The thick muscles that make up the heart are the: 

• smooth muscles
• cardiac muscles
• skeletal muscles

The layer of the skin that covers and protects your body. 

• epidermis
• dermis
• hypodermis

Voluntary muscles (you control) that work with your bones to give your body power, strength, and the ability to move are the:

• smooth muscles

• cardiac musles

• skeletal muscles

The middle and thicker layer of skin that houses the blood cells, sweat glands, and hair follicles. 

• epidermis
• dermis
• hypodermis

Which is an example of a ball and socket joint?

• knee and elbow

• finger and thumb

• hip and shoulder

Involuntary muscles (you cannot control) that help your body digest your food are the:

• smooth muscles

• cardiac muscles

• skeletal muscles

The lower layer of skin that connects skin to muscles and bones. 

• epidermis
• dermis
• hypodermis

Which is an example of a hinge joint?

• shoulder and hip

• knee and elbow

• ribs and sternum

Which is NOT a purpose of the skeleton? 

• Support or structure
• Protects organs
• X-ray
• Allows movements