HOW THE BODY WORKS Mònica Pareja Nieto CEIP Miquel Martí i Pol (Barberà del Vallès)

HOW THE BODY HOW THE BODY WORKSWORKS

Mònica Pareja Nieto

CEIP Miquel Martí i Pol (Barberà del Vallès)

HUMAN BODYHUMAN BODY

•Although we may look quiet on the outside, our body is constantly moving and changing inside.

•What parts of our bodies are involved when doing exercise?The heart

The lungs

The blood

The muscles

The bones...

THE HEARTTHE HEART•Our heart is made of muscle.

•It pumps blood around our bodies.

•Blood carries oxygen and nutrients to the parts of the body that need it.

Why does our heart beat faster when doing exercise?

THE LUNGSTHE LUNGS•Our lungs receive the air we breathe in through the nose.

•From the air, the blood take the oxygen.

•Blood carries the oxygen to all the organs in the body including the muscles.

Why do we breathe faster when doing exercise?

THE CIRCULATIONTHE CIRCULATION

6. The carbon dioxide carbon dioxide arrives at the lungsarrives at the lungs and we expel it through the mouth or nose.

1. The right part right part of the heartof the heart pumps blood to our lungsour lungs. The blood picks up oxygen.oxygen.

2. The blood carrying oxygen travels back to the to the left part of the left part of the heart.heart.

4. The body use the oxygen for moving, and it makes carbon carbon dioxide. dioxide.

3. The heart pumps the blood to all the other parts of the bodyall the other parts of the body, the brain and all the muscles. The blood delivers oxygenoxygen to them all.

5. It is carried away by the blood to the right part of to the right part of the heartthe heart. It pumps the blood to the lungs.

THE MUSCLESTHE MUSCLES

•The muscles in our body are very important - they enable us to stand up, sit down and move around.

•Our muscles need nutrients from food and oxygen to work properly.

•When doing exercise muscles work harder and need more supply of oxygen

When we exercise...When we exercise...Our muscles need an increased need an increased blood supplyblood supply (more oxygen and nutrients) so our heart beats fasterheart beats faster to make it arrive quicker.

The pulse ratepulse rate measures the beats of our heart. The time we need for the pulse rate to return to normal after exercise is our recovery time.recovery time.

We also breathe fasterbreathe faster - to get more oxygen into our lungs that is sent to the muscles through the blood. Lungs also expel the carbon dioxideexpel the carbon dioxide through the mouth or nose.

We also get hothot and sometimes flushed (or red faced) because of the effort.