Our body system consist of many system and they combine to do different works. It is important that all the system work properly. If any of the system stops working properly then our body is effected and causes many problems.
1. Muscular System:
By this system we know about muscles. Due to muscles we are able to run, walk etc. Our body also works properly due to these muscles.
2. Circulatory System:
The blood keeps circulating in our body continuously the main organs of this system is heart, arteries, veins and tissues. The heart always remains beating and through the veins circulate the blood to the whole body. We can see blue arteries on the upper parts of our hands which takes blood towards the heart.
3. Respiratory System (Breathing System):
To our human body oxygen always require to live. We take O2 through breathing and exhale CO2. Nose, wind pipes and lungs are the main parts of this organ.
4. Digestive System:
We need energy to work. This energy is derived from food. The food we intake becomes very useful to our body after chemical process. We come to know how the food is digested and how the energy produced by it.
5. Excretory System:
The food we eat, only a small part of it is retained in our body and at rest of it is excreted from body in the shape of waste materials. In the similar way, when we work, the energy is consumed as a result many waste materials are produced in the form of sweat and urine.
6. Sense Organs:
Eyes, nose, ears, tongue and skin are the main parts of this system. We get knowledge about our surrounding and the change of environment through them.
7. Nervous System:
Brain controls all the activities of human body. There is a net of nervous system spread in the whole body that send message of ’brain to different parts of the body and vice versa.
