Page 11 - Syok Praktis PBD (2023) Science TH5

Science Year 5 Practice 2 Humans

2.3 Relationship Between the Systems in Human Body

1. Every system in the body is related and dependent on each other to function correctly.
2. The diagrams below show several systems in the human body.

Digestive system Skeletal system Respiratory system

– The blood circulatory – The blood circulatory – The respiratory system
system transports system transports transports oxygen and is
oxygen to the digestive oxygen and nutrients to dependent on the blood
system. the bones for growth. circulatory system to
– The digestive system – Meanwhile, the skeletal transport oxygen to the
provides nutrients to system protects the whole body and to get
organs such as the heart body, respiratory organs rid of waste products
so that it can continue to and the heart from such as carbon dioxide
function well. injuries. from the body.

3. An example of this relationship:

When a boy fractures his hand bone, his skeletal system is affected. The
hand will swell and blood circulation will be disrupted.

Protecting the systems for our body health:

• Consuming a balanced diet that is rich in calcium to build strong and healthy
bones
• Exercising to strengthen bones
• Wearing a helmet when riding a bike or motorcycle
• Reducing the consumption of too much fat and sugar which are bad the blood
vessels and heart

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02 SYOK PBD SCIENCE YEAR 5.indd 9 05/10/2022 1:36 PM