Wednesday, 9 July 2014

Major Human Organ System



Many organ systems are present in a human body. These organ systems perform important functions. Some major human organ systems are given below.
Digestive System
This organ system consists of mouth, food pipe, stomach, intestines and liver. It helps in digestive of food.
Respiratory System
Respiratory System consists of nose, windpipe and lungs. We breathe through this organ.
Circulatory System
This organ system consists of heart and blood vessels. It circulates the blood within the body. The blood carries materials with it
Nervous System
Nervous system consists of brain, spinal cord and nervous. It carries messages form one part of the body to other.

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