Exploring the Skeletal System

What is the hard outer layer of a bone called?

• Marrow

• Periosteum

• Compact bone

• Spongy bone

What is the main function of the rib cage?

• Protect the brain

• Support the body

• Protect the heart and lungs

• Aid in movement

Which bone is known as the collarbone?

• Scapula

• Clavicle

• Sternum

• Humerus

What is the name of the bone found in the upper arm?

• Femur

• Radius

• Ulna

• Humerus

Which part of the bone contains bone marrow?

• Compact bone

• Spongy bone

• Periosteum

• Cartilage

What is the longest bone in the human body?

• Tibia

• Fibula

• Femur

• Humerus

What is the primary function of red bone marrow?

• Store fat

• Produce blood cells

• Store minerals

• Provide structural support

What is the function of the periosteum?

• Protect the bone

• Produce blood cells

• Store minerals

• Aid in movement

What is the primary mineral stored in bones?

• Iron

• Potassium

• Calcium

• Sodium