Human Body Grade 3

How is the food we eat changed into tiny bits?

• By blood in the kidneys

• By digestive juices

• By the blood machine

If all of your blood vessels were joined end to end, they would stretch......

• The length of a street

• The length of 3 football pitches

• More than twice the world

Which of the five senses would you use to tell the brain that a cake is cooking?

• Hearing

• Taste

• Smell

Which is the easiest place for germs to attack you?

• Your ears

• Your nose

• The pores of your skin

• Your mouth

Which of these does NOT help you to make words?

• The shape of your mouth

• Your vocal cords

• Lip reading

• Air from your lungs

How can we tell if something is hot or cold?

• Your muscles

• Pressure on your bones

• Tiny nerves in the skin send messages to your brain

• The cells in your blood

Which of these does NOT help your joints move?

• The skin

• Ligaments

• A special liquid to oil them

• Covers to hold them together and keep liquid in

How are freckles made?

• From oil squeezed out of the skin

• Where color cells are bunched up

• Where pores are close together

• From dry and dead skin

How old is the baby inside it’s mother when the doctor can hear it’s heart beat?

• one month

• Two months

• Four months

• Five months

How many bones are there in the skeleton?

• About 20

• Over 50

• More than 200

• More than 1000