1
2
3
4
5
100

pumps blood to all the other parts

HEART

100

red liquid in your body that helps carry oxygen and nutrients

BLOOD

100

These are vital organs in the respiratory system

Lungs

100

tiny cells in boys for reproduction 

sperm

100

we breathe in from the air that helps our bodies stay alive

OXYGEN

200

responsible for transporting air to and from the lungs

Windpipe

200

beating you can feel in your wrist or neck

PULSE

200

system in your body helps move blood around

CIRCULATORY SYSTEM

200

long, curved bones, which surrounds and protects organs

Ribs

200

gas do plants need from the air to make their food

CARBON DIOXIDE

300

tubes  that carry blood

BLOOD VESSELS

300

process by which organisms take in oxygen

Breathing

300

tiny cells inside a girl's body

Ova

300

sticky stuff your body makes to help keep you healthy

Mucus

300

a large, dome-shaped muscle beneath the lungs

Diaphragm

400

maintain health and prevent the spread of diseases

Hygiene

400

number of breaths a person takes per minute

Breathing rate  

400

helps move blood around your body

CIRCULATION

400

an organism that provides food and support to another organism

Host

400

something that happens to girls as they grow up

Menstruation

500

systems made to protect us against threats

Defence

500

helps keep insects , like bugs or animals, away from you

repellent

500

a sperm cell from a male combines with an egg cell from a female

Fertilisation

500

a delivery person for diseases

Vector

500

a tiny creature that lives on or inside another living thing

parasite