OUR BODY SYSTEMS

NATURAL SCIENCE

UNIT 2 OUR BODY SYSTEMS

INDEX

1. The 5 senses .

2. How do our bodies work?

3. Nervous system

4. Locomotor system

5. Circulatory system

6. Respiratory system

7. Reproductive system

8. Healthy habits

9. Games

the 5 senses

All the senses give information about our body and the environment to the brain.

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Sight

Our eyes are the organs of sight. We can see different shapes, sizes and colours.

Hearing

Our ears are the organs of hearing. We can hear loud and quiet sounds.

Smell

Our nose is the organ we use to smell. Air enters the nose through the nostrils.

Taste

Our tongue is the organ we use to taste. We can identify 4 basic tastes: sweet, salty, bitter and sour.

Touch

Our skin is the organ we use to touch. It is the largest organ in the human body!

How do our bodies work?

information

Our bodies work thanks to all the information that we receive from the 5 senses. The 5 senses send the information to the nervous system.

THE NERVOUS SYSTEM

The nervous system controls everything you do. The nervous system is made up of the brain, spinal cord and nerves. The most important part is the brain. This organ is inside your head and is protected by the skull. The brain receives messages from our senses, analyse the information and gives instructions to the body. The nerves send the instructions to the different parts of the body.

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THE LOCOMOTOR SYSTEM

The locomotor system controls your movements. It is made up of bones, joints and muscles. Our locomotor system helps us move, eat and speak. Bones are hard and rigid. They make up the skeleton, that support our body. Muscles are elastic and flexible organs. They help us move. Joints they connect bones. For example: hip, knee, wrist, shoulder, ankle, elbow…

BODY JOINTS

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THE CIRCULATORY SYSTEM

The circulatory system it is like a transport system. The heart pumps blood that carries nutrients from the food we eat and oxygen from the air we breathe, around the body. It is made up of the heart, blood and blood vessels (veins and arteries).

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THE RESPIRATORY SYSTEM

It’s made up of the nose, mouth, the trachea, the bronchi and the lungs. They work together to help us breathe. 1.We breathe in air with oxygen through our nose and mouth. 2.The air goes down the trachea, through the bronchi into our 2 lungs. 3.Oxygen is passed to the circulatory system (blood), where it moves around the body. 4.We breathe out air full of carbon dioxide.

EXPERIMENT TIME

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THE REPRODUCTIVE SYSTEM

The reproductive system allows us to have babies.

MEN

WOMEN

Women have vagina and ovaries, that produce egg cells.

Men have penis and testicles that produce sperm.

HEALTHY HABITS

AET HEALTHY FOOD

GET ENOUGH SLEEP

KEEP YOUR BODY CLEAN

DO EXERCISE

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It is time to study!

Difficult roads lead to beautiful destinations!

Our body sistems by Mónica Gómez López is licensed under a Creative Commons Reconocimiento-NoComercial 4.0 Internacional License.