We have five senses and each sense has an organ.
1. Sight - The organs of sight are the eyes and we use them to identify colour, size, shape and distance.
2. Taste - The organ of taste is the tongue and we use it to identify different flavours.
3. Touch - The organ of touch is the skin and we use it to identify if something is hot or cold, hard or soft, smooth or rough.
4. Hearing - The organs of hearing are the ears and we use them to identify loud, quite, high and low sounds.
5. Smell - The organ of smell is the nose and we use it to identify different smells.
Our sense work together with our nervous system.
2. OUR NERVOUS SYSTEM
The nervous system is made up of the brain, the spinal cord and the nerves.
1. Brain - The brain controls everything that happens in our bodies.
2. Spinal cord - The spinal cord connects most nerves of our body to the brain.
3. Nerves - The nerves carry messages to the brain.
3. OUR LOCOMOTOR SYSTEM
Our locomotor system makes our body move and it is made up of bones, joints and muscles.
It uses nutrients from food and oxygen to work.
We use our locomotor system to move, eat and speak.
1. Bones - We have 206 bones and they are hard and rigid. Bones make up the skeleton and they support the body and protect vital organs.
3. Muscles - We have 600 muscles and they are elastic and flexible. We can move some of them (biceps), and other muscles move automatically (heart).
4. OUR CIRCULATORY SYSTEM
Our circulatory system carries nutrients and oxygen around the body. It is made up of the heart, the blood and the blood vessels.
1. The heart - It is a muscle the size of your fist and it´s in the middle of the chest. It works day and night to pump blood to every part of the body.
2. The blood - It is a red liquid that goes around the body. It travels in blood vessels.
3. The blood vessels - They are thin tubes through which the blood circulates.
5. OUR RESPIRATORY SYSTEM
When we breath in, oxygen enters our blood through the respiratory system.
When we breath out, the carbon dioxide leaves our body.
The respiratory system is made up of the nostrils, the windpipe, the bronchi and the lungs.
1. The nostrils - The nose has two holes called nostrils where the air enters our body.
2. The windpipe - It is a tube that carries air to the lungs.
3. Bronchi - Two tubes of the windpipe that carry the air to the lungs.
4. The lungs - They are two sacks made up lots of little sacks where the air goes in.
The process
1. When we breath in, oxygen enters through the nostrils.
2. Next, it passes through the windpipe and goes down the bronchi into the lungs.
3. Then, the oxygen passes from the air into the blood and the carbon dioxide passes from the blood into the air.
4. Finally, the carbon dioxide leaves our body when we breath out.
4. OUR CIRCULATORY SYSTEM
Our circulatory system carries nutrients and oxygen around the body. It is made up of the heart, the blood and the blood vessels.
1. The heart - It is a muscle the size of your fist and it´s in the middle of the chest. It works day and night to pump blood to every part of the body.
2. The blood - It is a red liquid that goes around the body. It travels in blood vessels.
3. The blood vessels - They are thin tubes through which the blood circulates.
5. OUR RESPIRATORY SYSTEM
When we breath in, oxygen enters our blood through the respiratory system.
When we breath out, the carbon dioxide leaves our body.
The respiratory system is made up of the nostrils, the windpipe, the bronchi and the lungs.
1. The nostrils - The nose has two holes called nostrils where the air enters our body.
2. The windpipe - It is a tube that carries air to the lungs.
3. Bronchi - Two tubes of the windpipe that carry the air to the lungs.
4. The lungs - They are two sacks made up lots of little sacks where the air goes in.
The process
1. When we breath in, oxygen enters through the nostrils.
2. Next, it passes through the windpipe and goes down the bronchi into the lungs.
3. Then, the oxygen passes from the air into the blood and the carbon dioxide passes from the blood into the air.
4. Finally, the carbon dioxide leaves our body when we breath out.
6. OUR REPRODUCTIVE SYSTEM
Our reproductive system allows us to have babies.
Men and women have different reproductive systems.
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