Humans

Question 1

The human skeleton

Answer 1

—> A skeleton provides support
and protection.

—> The joints between bones let
you move.

Question 2

Muscles and movement

Answer 2

—> Muscles pull on bones to
make you move.

—> Antagonistic muscles pull
bones in opposite directions.

Question 3

Organ systems

Answer 3

—>Your nervous system senses
your surroundings and
controls your body.

—> Your respiratory system
carries out gas exchanges.
Here oxygen moves into your
blood and carbon dioxide
moves out.

—>Your digestive system breaks
down food particles to allow
them to get into your blood.

Question 4

The circulatory system

Answer 4

—> Your heart pumps blood
through your lungs and
around the rest of your body.

—> Blood delivers glucose and
oxygen to every part of your
body.

—> Blood leaves your heart in
arteries and returns in veins.

Question 5

Studying the human body

Answer 5

—> Many different scientists
study the human body.

—> Their work helps us to stay
healthy, recover from disease,
or improve our lives.

Question 6

Extending lives

Answer 6

—> Faulty organs can be replaced
by transplants.

—> People with a transplant
have to take special drugs to
prevent it from being rejected.

—> Organs grown from your own
tissues are never rejected.