What Are White Blood Cells | Health | Biology | FuseSchool

Blood consists of red blood cells, white blood cells, platelets and plasma.

White blood cells are our warriors; the army inside our body that protects us from infectious disease and foreign invaders. They make up less than 1% of our blood.

Our body has a first line of defence, which we saw in the video on ‘bodies defence against pathogens’, but when this fails our white blood cells kick into action.

White blood cells are the cells of our immune system. There are two types of white blood cell; phagocytes and lymphocytes.

Phagocytes have a multi-lobed nucleus within cytoplasm. They are made in your bone marrow, and they actively seek out and engulf bacteria. They will even squeeze out of the blood, through capillary walls, to reach infected tissue. There are different types of phagocytes, with neutrophils being the most common.

Lymphocytes are formed in lymph nodes, which are found all around the body such as in your armpits and neck. Invading pathogens contain a chemical on their surface called antigens. The lymphocytes detect this and produce antibodies in response to it. The antibodies stick to the surface of the pathogen and kill it by either making it easier for phagocytes to ingest them, or making the pathogen burst, or by making the pathogens clump together which turns them into a sticky mess and again makes it easier for phagocytes to find them.

Each antibody is very specific; it will only attack one type of bacteria. Other lymphocytes produce antitoxins which combine with the invader’s toxins and make them harmless.

Sometimes the body cannot produce antibodies naturally or fast enough, and so we can have vaccinations to help us out. We will look at vaccinations in another video.

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[ISRAADVISUALS]

There are actually two main types of white blood cells
1.granulocytes
2.Agranulocytes

[Henriong]

I came down here to see if Karen had anything to say about vaccines

[deebaleiwasa]

What shoula we eat to make a lot of white blood cells?

[seanfarrell]

It only mentions antitoxins at the end but this is the best video I could find on them...

[peachblossom]

pls try to improve the sound quality im straining my ears to distinguish what on earth you are saying

[Sierra-ohsn]

Thank you so much for clearing all my dout

[RaFi-zhig]

It'll be very helpful if you attach the video links in the description that you suggest us to watch

[mathewm]

When you complete your school work 20 minutes early😌

[Natalieelza]

Please, sir /madam do an explanation about enzymes and it's functions and types .
much appreciated
Thanks for all your efforts and hard work I succeeded in my exams

[mey]

Your video get to me deeply..ehehehhh xora bagus ko update banyak lagi..ching

[Natalieelza]

And yr content is seriously outstanding

[mananrupani]

So basically phagocytes are Nemenja vidic(destructive) and lymphocytes are Rio Ferdinand ( intelligent and technical)

[ThawBerry]

A whole two days of teaching in 3 minutes 😂

[BotoLishus]

Life is indeed complex and there is immense wonder and beauty just not out there but in us. YET we proudly conclude, “Its all just a random concoction of matter, time and space”. How silly it would be for me to say that about this very well-created, information-loaded video? When we see a beautiful art, we inquire about the artist. When we watch a very well made video we subscribe to its creator. This video appropriately makes me respond in awe and wonder because there ought to be a Maker and a Designer who is Super intelligent and benevolent as the video implies. That is, just as antibodies sacrificially die to save us from infection, the whole story of the Bible can be summed up in this way- God Who brilliantly created the world, in spite of our rebellion and sin sent His Son Jesus Christ to sacrificially die on our behalf to save us from our condemnation and to give us eternal life. I can’t see my antibodies but i have faith that it is working. I haven’t seen God with my naked eye but His fingerprints is all over the place including this video. It really takes more faith to be an Atheist than a Theist

[christophermckinley]

Anyone else come here to find out how there body fights off there sickness? It sucks being sick. 😔

[rosiemoradatalampas]

Leukemia is not a disease, it means ur saved, we don't need red blood, we need air, clean air

[devrajbhadoria]

Man I am studying but this give me axinity

[AISH_TheMotivate]

What about granulocytes and agranulocytes? 🤔