Page 15 - EVS Class 03

g Respiratory System : The organs of this

system help us to breathe in fresh air
and supply oxygen to all parts of the

body through the blood. The air we
breathe out contains carbon dioxide
and the air we breathe in contains

oxygen that is used to release energy.

g Circulatory System : The heart pumps

blood and the blood vessels circulate it
throughout the body. Arteries carry pure
oxygenated blood from heart to different

parts of our body and veins bring dirty
blood to heart from various body parts.

g Nervous System : The brain, spinal cord and the

nerves carry on the functioning of learning,
thinking and acting in various activities.

Excretory System : It removes the harmful

wastes.

g Reproductive System : It helps in producing
babies.

EVS-3
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