Human Body Systems Post-Test

Front

What is the main function of the skin?

Back

The skin's main function is to act as a barrier.

Front

How many bones does a baby have at birth?

Back

A baby is born with 300 bones.

Front

How many bones does an adult have?

Back

An adult has 206 bones after fusion during growth.

Front

What are finger bones called?

Back

Finger bones are called phalanges.

Front

What substance helps bones glide over each other?

Back

Cartilage helps bones glide over each other.

Front

What is the outer layer of skin called?

Back

The outer layer of skin is called the epidermis.

Front

What is the function of cartilage in the body?

Back

Cartilage provides cushioning and allows bones to glide smoothly over each other.

Front

What is the largest organ in the human body?

Back

The skin is the largest organ in the human body.

Front

What happens to the number of bones as a person grows?

Back

Some bones fuse together, reducing the total number from 300 to 206.

Front

What is the role of the epidermis?

Back

The epidermis protects the underlying tissues and organs.