Cancer, How Cancer Starts, How Cancer Spreads, Where and Why, Animation.
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- Опубликовано: 15 окт 2024
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The number of cells in a tissue is determined by the balance between cell division and cell death. Uncontrollable cell division leads to formation of abnormal growths called tumors. Tumors can be benign or malignant. Benign tumors are slow-growing and constrained by surrounding connective tissue so they do not spread to other organs. They can still be harmful or even kill by pressing on nearby nerves, brain tissue or blood vessels. Examples of benign tumor include pituitary tumors which may press on optic nerves and cause loss of vision. Cancers are malignant tumors - tumors that can spread beyond of the limit of original organ where it comes from and to other organs of the body.
How cancer starts
Cancer starts from damage in the DNA of a cell. This DNA damage is called mutation. Mutations happen when the cell duplicates its DNA prior to cell division and makes mistakes. These damages are usually detected and repaired before the cell can divide but sometimes, some of them may be ignored and transferred to daughter cells.
If the mutation is located in one of many genes that control the cell cycle, it may affect the regulation of cell cycle in the cell carrying it, and make the cell divide faster than it supposed to. Usually, one mutation is not enough to cause cancer, but as it makes the cell cycle control less reliable, many more DNA damages/mutations would go unnoticed. Cancer is usually the result of accumulation of many mutations of genes involved in cell cycle control and DNA repair. This commonly happens over a long period of time, over many rounds of cell divisions, and this explains why cancers are more common in older people.
Some people are said to be predisposed to cancer. This is because they are born with a mutation that makes them more likely to develop a certain type of cancer. This mutation alone is not enough to cause cancer but it starts the process of making cells cancerous. The person carrying it is one step further down the road towards developing a cancer than others who do not have the mutation.
How cancer spreads
Cancer cells do not stick together like normal cells, they move and invade nearby tissues, organs, this is local spread. They may also spread to further away organs by means of blood and lymph circulation, this is systemic spread. Metastasis is the spreading of cancers to non-adjacent organs. Cancer cells from the original tumor, or primary cancer, can break out and maybe taken up by a blood or a lymph vessel for a ride throughout the body. They can then squeeze out from the vessels into other tissues and start a new tumor growth in the new location which will become secondary cancer.
Where do cancers usually spread and why?
While travelling in the bloodstream, cancer cell usually stops at the first place where the vessel getting so narrow that it gets stuck. As blood flow from most organs goes to the capillaries of the lungs, this is where cancers spread the most. Lungs are indeed the most common site of secondary cancers.
Likewise, while travelling in the lymphatic system, cancer cells commonly get stuck in nearest lymph nodes, where the vessels get narrower. This is the reason why surgeons usually remove nearby lymph nodes when removing tumors.
![The Cell Cycle (and cancer) [Updated]](http://i.ytimg.com/vi/QVCjdNxJreE/mqdefault.jpg)
![The Cell Cycle (and cancer) [Updated]](/img/tr.png)
My grandmother passed of cancer 3yrs ago and I never knew exactly what happened...Amazing video thank you so much
So sorry about your grandmother! Thank you for your kind comment.
Informative video thank you so much 😊👍✌️☺️☺️😂✌️
sharice cartynn
my son passed away 2months ago because of cancer,spread already in lungs&liver.it starts germ cell,so young 23 years old
Rip :(
Coming here after my best friend told me that he has tumor and is going to doctor to check if there's any cancer. Shit scared guys. Please pray for us
any news
By the blood of Jesus your friend will be saved from this tumor and in good health for years to come. Say that with your hand raised and your mouth and heart in full belief.
so...what's the situation now?
Thanks to my doctor who cured me of cancer that almost get rid of my life.
Congratulations!
Congratulations
You will die with or without cancer
God bless u...u r a fighter
Congrats!
Thank you! Writing an essay on the progression of cancer from an early benign lesion to a genetically heterogeneous malignant tumour and this is a very helpful starting point! The transcript is also very helpful
lol me too. i don't suppose you could help me for any links or sites that would help me with the same essay
@@So1asolashe was trying to show off on her vocabulary lol, she's not doing an essay
I have a friend who has stage 2 cancer. She said her life is so bad and i thought she was joking so i corrected her so then she told me she had stage two cancer. I thought she was joking but she actually does have stage two cancer. To this day i still regret correcting her.
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When a cancer cell breaks off of the primary breast tumor, I don't think it's referred to as secondary but rather metastic breast cancer. Secondary cancer, I believe refers to cancer that has been pathologically identified as not being the same
Metastatic breast cancer would mean breast cancer (primary) breaks out and spreads (you are right!), but once it creates another cancer somewhere else, for example in the lungs, the lung cancer is called secondary to the primary breast cancer.
Alila Medical Media thank you so much for responding!👍
@plastics_block_testosteronefym?
Human needs cure for cancer. So many have died of cancer around the globe. We need healing treatment. May God produces the right medications for cured.
Sad there is always been a cured due to power control and money They never willing want to bring the many cures to Light they value money power and control over actually cursing people they make billions of cancer why would they want to stop making billions lol also think about that billions a year and no progress lmao nope they always known tha cure they just don't want to put it out for the public or else many people would be cured left and right and they will lose billions of dollars instantly
Long story short the day the start curing people they will stop making money most cures are free
The problem is that when it comes to cancer the best way to solve it is to find a way to slow it to the point of becoming null
We can’t really stop developing cancer cancer is a disfuntion a happens we can become extremely resistant to it but it’s never 0% go away
A video on cancer treatment
My husband is operated for scrotum cancer one month ago .pls make a vedio on this pls
I'll tell everyone about you *MR OBALAR* coming across your RUclips channel was a blessing, I'm free from hpv, victory at last.❤❤❤….
Very informative video! Thank you!
thank you. My dream is to become a micro biologist and i need to learn about cells and smalls stuff to make cures, vaccines and meds.
Hopefully in the future ill make the cure for cancer
Thank you @AlilaMedicalMedia for such illustrative content on Cancer. I found the concept of Secondary Cancer very helpful in identifying the probable location of Lung Cancer in CT scan(s). What are the other areas in a Lung where one may find (probably) a benign tumor?
I just lost my first cousin this morning to cancer , he was only 52 yaers old 😢 I hate it
Nice information. Thanks.
I hate cancer
Bro no body love cancer 😂
I hate Capricorn… 😒
Agar kisi bhai ko product ki jarurat hai to batana cancer ke liye
@@guriyaar6936, you clearly realize that we don’t understand what you’re saying.
I hate the people that hide the cure to cancer even more then cancer
How exactly does a duplicate? Isn't that weird? What occurs in the body that makes it duplicate?
The cells duplicate
Some kid in my class is telling Everyone ur born with cancer and everyone has it i dont rlly believe it and can u tell me if its true or not so i can show him
Shadow Rage its true cuz I have cancer aaaaaannnndd iam getting cured
Not true
@@maxout10s63 same bro , how r u now
Gratitud y bendiciones ¡Amén!
I have a cure & treatment for all kind of cancer diseases ,
From Pakistan
If anyone believe
Me encanta el contenido.
Hi is this possible to control cancer cells to divide or stop there growth by diet or eating healthy.
Does fasting really stop cancer cells from growing
Yes.. Follot keto diet and intermittent fasting
tutoring so clearly !! good ～
I came here after Manisha ma'am recommend to see this video. I am Pritee Mohan Sahoo
meri bua ko gale me cancer hop tha. lekin jab se unne R.K HERBAL ANNUSANDHAN team se davai lena shuru kiya hai vo bahut hi jada swasth mehsus krne lagi hai thanks R.K HERBAL me sabhi ki bhalai ke liye unka number de rahi hu 7393985932 yaha sirf 3dino me cancer thik hota hai....
humans are very fragile creatures we need to do everything to protect our physical bodies our tethers to the living realm are very fragile and must be protected. be safe when working never eat dirty food.
Our brains the only thing that matters your body is disposable
very informative
sir if i wrote how normal cell convert into cancer cell in place of how do cancer cell differ from normal ones? ? then i got any number out of 4 plz tell me i am in tension
If a tumor is benign is it or is it not cancer??
It can lead to cancer if don't get the proper medication
Benign it’s not breaking off and spreading
But he did say it can turn to cancer that’s why you need regular checkups
very useful thank you😊
Thanks for video because my mother was diagnose lung cancer 10 years ago my father is addicted for cigarette..the secondhand expose my was affected..she is cancer survivor but die after 1 year..my family cannot spend the money to support medical assistant ..but thankfull for god Jesus Christ pls o save the soul spirit of my mother..
Grape seed consumption helps
Thanks
Gread 1 oral cancer stage 1 se stege 2 hone m kitna time lgta h pliz ans.
So does it mean Just tumor cell itself moves through vessels?
Nice work
thank you😌😌
Damn so you can't even avoid it. This sucks
Good
Interesting
Nice😊😊
Ad làm ung thư drama quá💀
Apakah kanker menular ,atau menurunkan kepada keturunan selanjutnya..??
Semoga tidak ,
I might have cancer
Hopefully you don’t! I’ll be praying for you!
I do pray that you don't have
Whyyyy do cancer start
woow very useful
Hi,
It happens cause RB protein is over working. RP protein is transcriptional factor which have E2F factor which then start transcription.
But even it is over working there is check point at site of G1 phase or before entering S phase so at that site there another gene called as P53 gene , this gene detect any mutation. If there is one then P53 either repair it by activating repair protein or It activates apoptosis genes which kill cell in case if damage is too much to repair.
So, you guess, if p53 not working well then no detection right ? So mostly cancer occur any damage to p53.
مقاطع فيديو بالفرنسية في موضوع السرطان
For a ride throughout the body..wow
Hi
My cancer is malignant, I am cool with it, why is it taking so long, I am in an abusive relationship with my mom and don't want to get better, I have nobody, I would rather die soon, I can wait for a six months diagnostic say 6 months then I can take death pills yippy!!!
Live for you only.
Eliza Castro you wrote this 6 months ago I hope you are ok God bless you
Are you alive after two years? Pls respond
@@nishaali3507 ghanta thik hota h
Eliza Castro mam you wrote this 5 years ago, loads of love to you mam❣️
👍
Translate into Urdu.... please
0.04
You say more the word cancer than i ever hear in my life 😡
Who came to see this video after Manisha ma'am recommend.hit the like
If he really cared about mine maybe I would but cheated as I got cancer KARMA CAME BY HIM ITS NOTHING SERIOUS IF IT IS.. WELL HE NEEDS HELP.... I needed help and would help. So I treated myself means he needs to too... I was alone the whole time whole while he cheated on me....
I want to cancer
Wait
What