1. UNIT 2 NUTRITION NATURAL SCIENCE 4th
The four systems that contribute to this process are: the digestive,
respiratory, circulatory and excretory systems.
• The digestive system allows us to obtain nutrients from food.
• The respiratory system consists of the respiratory tract and
lungs.
• The circulatory system consists on the heart and blood vessels.
• The excretory system consists of the urinary system, skin and
lungs.
To keep your heart healthy, it is important to...
…eat a healthy diet.
...sleep well.
...do regular exercise.
...not smoke.
REPRODUCTION
The reproductive system consists of the organs we need to have
children. It is different in men and women.
HEALTH
We say we are in good health when we feel well and our body works
properly.
When we are ill, we feel signs or symptoms, such as fever or pain.
