Platelets & Blood Clotting | Biology | FuseSchool
HTML-код
- Опубликовано: 10 окт 2018
- Do you remember tripping over as a kid and cutting your knee? And then like magic the bleeding suddenly stops? Have you ever wondered why this happens?
Our body is very clever and produces substances to seal off the open wound.
In this video we are going to look at how and why blood clots.
Clotting prevents us from bleeding to death, and also protects us from nasty disease-causing organisms, called pathogens, entering our body.
When we injure ourselves, we can damage the blood vessels just below our skin. This can cause blood to either leak into our tissue and form a bruise, or, if the skin is broken to openly bleed.
To prevent these horrible things happening, blood clotting occurs.
So let’s have a look at how this happens.
Starting with platelets. These are tiny cell fragments that float around in our blood.
When a blood vessel is damaged, collagen is exposed. This collagen exposure attracts platelets to the injured area. The platelets then stick together to form a plug.
They’ve quickly built a little barrier that stops us from losing too much blood. However, this platelet plug isn’t that strong. So it needs to be made stronger.
A protein called fibrin does exactly that.
In our blood there are soluble fibrinogen proteins. At a wound, these soluble fibrinogen proteins are exposed to outside chemicals that aren’t normally found in blood vessels. Like with the collagen and platelets, this exposure causes the fibrinogen proteins to turn into sticky fibrin fibres.
The fibrin fibres form a mesh, holding all the platelets together and making a much stronger clot.
More platelets, red blood cells and other components in our blood, all get stuck in the mesh making it even stronger. This clot stops more blood escaping the body. And also prevents nasty pathogens entering our body from the outside.
The clot develops into a scab, which protects the wound as it heals and new layers of skin form underneath. So really, all a scab is is just platelets trapped in the fibrin mesh!
When the new skin is fully formed, the scab will fall off, revealing the lovely brand new skin underneath.
Remember that I said the exposure to collagen causes the platelets to stick together? And the exposure to outside chemicals causes the fibrinogen to turn into sticky fibrin?
Both the platelets and the fibrin only become sticky AFTER the exposure. This means that in a normal, healthy blood vessel they won’t randomly cause clots.
So from this video, you should understand the magic of blood clotting. Platelets are first to the scene closely followed by fibrin fibres. Our blood clots so that we don’t lose a lot of blood and don’t let lots of nasty pathogens into our body if we cut ourselves.
SUBSCRIBE to the FuseSchool RUclips channel for many more educational videos. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT.
VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and answer questions, and teachers will get back to you.
These videos can be used in a flipped classroom model or as a revision aid.
Find all of our Chemistry videos here:
• Complete & Incomplete ...
Find all of our Biology videos here:
• The Lymphatic System |...
Find all of our Maths videos here:
• Video
Twitter: / fuseschool
Access a deeper Learning Experience in the FuseSchool platform and app: www.fuseschool.org
Follow us: / fuseschool
Friend us: / fuseschool
This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: creativecommons.org/licenses/b... ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: info@fuseschool.org
Thanks. Just showed this to my 6 year old daughter after getting a cut in her hand. Now she's looking at the cut and saying, "You're doing a great job platelets!" ☺️
Aww 🥰 So glad to hear that!
FINALLY a video from this channel that has actual audible pronunciation OMG
Finally a video about blood clotting I can finally understand.
Glad it was helpful!
A simple explanation, just what I needed.
Can u make a detailed video on blood clotting where the function of thrombokinase, prothrombin , fribrinogen and fibrin are given properly
Exactly
Yes that's what i'm searchin for
Were is thrombin and prothrombin😶
You elaborate it in a very simple way!! Thank you
Thank you too! Glad you liked it!
This is exactly what I was looking for. Thank you so much !!!!
Thank you!
Thank you, explained in a very simple way and straight to the point.
Thank you too! Glad you liked it!
When there’s an open wound, platelets will release chemicals that cause a soluble fibrinogen protein to convert into a insoluble fibrin and insoluble mesh. This will allow the blood cells to trap and therefore forming a clot. When the clot dries, it will form a scab that prevents bacteria from entering the wound .
1234
Excellent video!!!!
Wow now I understand this in only 3 MINUTES!?!?!? This is insane and may be really helpful
Glad you think so!
That's what I was exactly looking for! Many thanks.
Excellent! Glad we could help!
What a fantastic mechanism our body has it surprises me everyday God has created us so finely 🙏
Good information.. Easy to understand
Thanks for this informational ❤️❤️
You explain simply and easy thank you so much ☺️
Thank you! So nice of you 😊
Thanx for explaining this way
Glad you liked it!
Thank you from a #TTP (Thrombotic thrombocytopenic purpura) patient.
You have help me revise for my test thank you so much 😊
So glad! Always happy to help!
this really helps thanks
Glad it does!
Thanks. Your video it help he to know some of blood
Nice video i love it
Well done!
Thanks!
Thanks for the fascinating video
Thanks for watching :)
wonderful thanks
Thank you!
Thank you very much.
No problem!
Excellent explanation 👌 thank you
Most welcome! Glad you liked it!
Thank you xora for sharing 😍😍😍
Our pleasure 😊
Thank you
Any time!
Can i get a heart for my fav teaching channel ❤❤❤❤
Really you are a very good teacher
Thank you! 😃
AmazING videos
Thank you!
Thank you so much sir
Most welcome!
wow it is cool very cool
thank you so much for sharing thiss...its very helpfull..
You're welcome! Glad it was helpful!
AMAZING VIDEO
THANKS!
Thank you:) 💚💚🕊
You are welcome 💜
It is very good
What is the difference between hemostasis, blood clotting and coagulation?
All 3 processes are quite similar which makes it confusing to understand
So simple and detailed I love it.
Glad you think so!
Wow... Nice explaning. 😀👍👌
Thanks!
I wanna ask. How betadine help platelets? Or any medicine that we take when we are wounded. Thank you in advance
Really helpful👏👏
Glad it was!
Are there collagen fibres in blood capillaries too?
Is the same thing done after mass surgery for triple by pass.
Thanks it was helpful. Give more educational videos
Glad it was helpful 😉
Si helpful thank youu
Glad it was helpful!
Compare that to Cells at Work. In the anime, the platelets make a net to stick the red blood cells on it, which is correct. The platelets themselves just stay inside the body and let the red blood cells die. They did not fuse with the reds.
Anone Anone
Very nice thankyou
Most welcome 😊
Tiny cells in the blood called platelets stick together around the wound to patch the leak. Blood proteins and platelets come together and form what is known as a fibrin clot. The clot acts like a mesh to stop the bleeding. ... Each factor activates the next until they form a clot.
Thhhankss!!
No worries!
2nd comment thanx for the video👌
Please make a video on Blood plasma and serum.
Noted! Thanks!
Who else had their teacher show this at class.?
How does fibrin get activated
The funny thing is they advistise how to slim down to a skinny person..... 😊Good explanation on platelets and blood clot.
Thanks! Glad you liked it!
Good ass video keep it up
thank you I am using your videos for my teaching during covid 19 situation - which is non commercial purpose
Wonderful! Glad they are being useful 🙂
so having a high platelet count is a good thing?
good video
Thanks!
If you blood platelets are low what medicine can help you reach your levels of platelets
keep going.good.
Will do!
Every biology video that I've watched infuse school gives me an incomplete information about different stuffs. The biology related videos are not as much as fruitful as chemistry and maths . Hopefully in future we'll get good biology related video
After watching CAW all i can think of when i hear platelet is just cute kids.
Thank you for the amazing animation
Thanks for watching!
Thank youu
No problem!
You are amazing!! Thank you.
Aww thanks!
Good 👍
Very good!
Nice!
Thanks!
@@fuseschool
Good video and easy to understand
From IQ
Thank you! Glad you like it!
Subahanallah
helped me visualise easier. thank you
Glad it helped!
I have had the disease itp low platelets for years. it affects my whole life. now also in hospital on IV. what a rare rotten disease it is. And the drugs also have their serious side effects. I hope it's just curable
I’m having the same problem. Had Rituxan infusions, didn’t get platelets up. Now doc wants to start
Promacta. I’m frustrated they can’t find the cause. Don’t want another drug.
What is out there to cure it.
I am trying to understand it but i couldn't after seeing this video it become clear
Wonderful 😃
Sir I need your blessing for my exam
Thank you so much for this video
Thanks for watching!
Does anyone feel afraid of the red blood cells and the white blood cells and the platelets?
what are the blood vessels
You: you remove the scab
Platelet: ah shit here we go again
Ok so how can you explain this in relation to the Covid-19 vaccines?
nice vedio
Thanks!
Hey! Great video but I have a question. What is collagen?
Is it a layer of skin? Or it it air around the body? 😅 Is it just floating on our skin or is it underneath a layer??
This might help: www.medicalnewstoday.com/articles/262881
@@fuseschool Thank you very much!!!
Zambian
this man did not just say magically twice in a scientific video
the video was quite helpful though
Glad ti was helpful!
Please allow to see private video it is very useful
Due to the effect of Haemophilia causing blood not to clot what could be affected
If your body Is making too many palates what can you eat
How to cure im easy bleeding
you know what I recommend cells at work to you :3 *watch the anime or the germs will get you*
What is the role of vitamin K in case of blood clotting
Vitamin K helps convert certain blood clotting factors that are involved in formation of the clot. Check this article out: www.newscientist.com/article/mg13217963-100-science-how-vitamin-k-makes-blood-clot/
Fibrin clot ???
My teacher sent me
u good
Thanks 😉
Why we can not see private videos
We might need to fix a few things in those videos before we make them public again. Bear with us!
Ok I understand but when we see private videos
who needs to read about blood cells and stuff when u can watch "cells at work"--
That show is not accurate. In the show, the platelets never stick with the red blood cells as the platelets just stay in the body. The red blood cells are seen carrying food baskets to represent nutrients, when in reality, red blood cells only carry CO2 and oxygen whereas the plasma is what carries the vitamins and minerals.
Thanks I had an exam
Hope it went well!
Are platelets same as lipids?
Hi there! Platelets are not the same as lipids. They are composed of different lipids, e.g. phospholipids, sterols, sphingolipids, free fatty acyls and glycerolipids.
Hi
luv it
Amazing!
Anone anone