Body+Systems

=Body Systems=

In the past 3 weeks i have been learning about the body system. I learnt about the eyes, the skeletal system, the nervous system, the nails, the ear, hair, and the heart. When i researched about the heart i learnt that there are 4 chambers in the heart. There is the left and right ventricle and the right and left atrium. The left ventricle pumps fresh blood to the body, and the right ventricle pumps old blood into the lungs. When you exercise your heart pumps faster because you have lost energy so your heart pumps faster so the blood can go around the body and replace the energy.

When i researched about the eyes i learnt the your eyes are like a camera lens. When we are in the dark our pupil grows bigger and when you are in a brighter place your pupil grows smaller. If you have a different eye color than your friends it doesn't mean that they can see better. Your eye color doesn't matter you can still see the same as others. When you are far away your lens grow