Bones
Joints
Bone functions
Bone parts
Random facts
100

What is the longest bone in the human body?

The femur

100

What is a joint?

A place where two or more bones meet.

100

What body system do bones make up?

The skeletal system.

100

What is the hard outer layer of a bone called?

Compact bone.

100

What bone protects the brain?

The skull.

200

What is the smallest bone in the human body?

The stapes, located in the ear.

200

What type of joint is found in the shoulder?

Ball-and-socket joint.

200

What do bones protect?

Important organs.

200

What soft tissue inside some bones produces blood cells?

Red bone marrow.

200

What bones protect the heart and lungs?

The ribs.

300

How many bones are in an adult human body?

206 bones.

300

What type of joint allows your elbow to bend and straighten?

Hinge joint.

300

What substance is stored in bones and helps keep them strong?

Calcium.

300

What is the flexible tissue that covers the ends of bones at joints?

Cartilage.

300

What is the backbone also called?

The vertebral column or spine.