Post by Admin on Feb 18, 2018 19:06:28 GMT
The immune system is the body’s defence against germs and is essential for survival. It is made up of a network of cells, tissue and organs that work together to keep our bodies healthy. It is the second most complex system in the human body - with the nervous system being the first.
The immune system has three main functions:
Attacking pathogens (such as bacteria, viruses, parasites and fungi) and removing them from the body to prevent us from getting ill
Recognising and netralising harmful substances from the environment
Fighting against the body’s own cells that have changed due to an illness - such as cancerous cells.
The immune system is incredibly clever and recognises the cells that make up our bodies. When it comes across something it doesn’t recognise it will try to get rid of it by attacking it. Our white blood cells (leukocytes) play an important role in doing this. They work to seek out and destroy any germs which may cause the body harm. They are made and stored in various places around the body. These include the thymus, spleen and bone marrow. They also live in lymphoid tissue (mainly lymph nodes) throughout the body.
The white blood cells circulate through the body between organs and nodes seeking out germs and other foreign bodies. They travel around in your blood stream via lymphatic vessels (tubes) and blood vessels.
You make about 1000 million white blood cells a day!
The immune system has three main functions:
Attacking pathogens (such as bacteria, viruses, parasites and fungi) and removing them from the body to prevent us from getting ill
Recognising and netralising harmful substances from the environment
Fighting against the body’s own cells that have changed due to an illness - such as cancerous cells.
The immune system is incredibly clever and recognises the cells that make up our bodies. When it comes across something it doesn’t recognise it will try to get rid of it by attacking it. Our white blood cells (leukocytes) play an important role in doing this. They work to seek out and destroy any germs which may cause the body harm. They are made and stored in various places around the body. These include the thymus, spleen and bone marrow. They also live in lymphoid tissue (mainly lymph nodes) throughout the body.
The white blood cells circulate through the body between organs and nodes seeking out germs and other foreign bodies. They travel around in your blood stream via lymphatic vessels (tubes) and blood vessels.
You make about 1000 million white blood cells a day!