Skeletal System

What is the skeletal system?

All the bones in the body

All the muscles and tendons

All the body's organs, both soft and hard tissue

All the bones in the body and the tissues that connect them

How many bones are there in the average person's body?




It varies by the individual.

Which of the following statement is INCORRECT?

Bone is where most blood cells are made.

Bone serves as a storehouse for various minerals.

Bone is a dry and non-living supporting structure.

Bone protects and supports the body and its organs.

Which bone protects the brain?


The cranium

The cerebrum

The cerebellum

Besides the brain, the skull also protects ...

the lungs

the diaphragm

the body's cells

the sense organs

The purpose of the rib cage is to...

protect the stomach

protect the spinal cord

protect the heart and lungs

provide an object to which the lungs can attach

What makes bones so strong?



Blood and marrow

Calcium and phosphorous

What is the difference between cartilage and bone?

Bone is rubbery, and cartilage is firm.

Cartilage is rubbery, and bone is firm.

Bone is a more primitive tissue than cartilage.

Bone is inside the body, and cartilage is outside.

The hollow space in the middle of bones is filled with ...



bone cells

bone marrow

What is the difference between compact bone and spongy bone?

They have different bone marrow.

They are made of different materials.

They have different sizes of bone cells.

They have different arrangement of bone cells.

What is a joint?

A hinge

A ball and socket

The place where two bones are joined

The place where tendons are fastened together

Types of Joints

Muscles are made of ...


polyester threads

calcium and phosphorous

groups of cells called fibres

How do muscles attached to the bones move the body?


pull movement only

push movement only

push and pull movement

What is the function of a tendon?

To link bones to bones

To link muscles to bones

To link muscles to ligaments

To bind the cells in compact bone closer together

Crossword Puzzle on "The Skeletal System"

Interactive Science Worksheets
Copyright by Alan & Hui Meng

Horizontal Rule

[ Worksheets Menu ] Home [ Main Page ] [ BrainPOP Movie - How Joints Work ]
If you have comments or suggestions, Emailemail us at