View full lesson: http://ed.ted.com/lessons/cell-vs-virus-a-battle-for-health-shannon-stiles
All living things are made of cells. In the human body, these highly efficient units are protected by layer upon layer of defense against icky invaders like the cold virus. Shannon Stiles takes a journey into the cell, introducing the microscopic arsenal of weapons and warriors that play a role in the battle for your health.
Lesson by Shannon Stiles, animation by Igor Coric.
The mitochondria its the powerhouse of the Cell!!
all of this and you're telling me there's no God.
I feel so strong that I have in army in my cells
It looks like oxygen molecule is putting up the middle finger
You didn't answer what happened if the virus was deadly
I'm a virus and I feel offended. We are more symmetric and pretty.
The mitochondria is the powerhouse of the cell
3:04 That oxygen molecule is flipping you off.
Viruses are particularly dangerous because they don't seem to serve any useful purpose for us . The amount of viruses on earth is far more than the amounts of human .We are outnumbered big time. And we are exposed to them all the time. It is foolish to think that we could kill all viruses. If we have to make human safe from the viruses were either need to quarantine humans from the natural or engineer such a strong immune system that the human body will resist virus attacks of any kind.
But now due to industrialization and advances of science human society has been getting more exposure to viruses than ever before. On the one hand we are traveling more, and thereby coming into contact with more viruses than ever before. On the other hand, by keeping alive millions of children who would have died of all sorts of diseases and by protecting people with all sorts of vaccinations, we are creating an immune system that is now more vulnerable to more things that could be easily battled with an stronger immune system. In other words, we have the worst of both worlds: the human body is getting weaker, and it is getting easier to spread diseases.
Bacteria are far less dangerous than viruses. In fact, most bacteria are useful to us . Our body contains many more bacteria cells than human cells, and we need them as they carry out vital functions such as helping us digest food and even sometimes fighting viruses. Unfortunately, we tend to kill them by the millions when we use antibiotics. An antibiotic does not discriminate between friend and foe, it kills all bacteria in your body. In the old days you would replenish your body simply by breathing them in the air and by drinking natural water . These days we so diligently kill bacteria in the air and in the water that there is virtually no way to replenish them in our body after having exterminated them. Whatever term you want to use for the beneficial work of bacteria, it's being weakened generation after generation.
The battle of the body was a brutal battle my Grandpa died in that battle
It took them 6 months to make this..
This is so interesting
I aced my cells and functions test with an essay because of this!
I'm a universe
this video made me appreciate my body even more
0:20 every living thing on Earth is made of cells… so… virus is dead… right?
O2 : Fuck You :)
Why doesn't the cell that got the virus first do it themselves?
I like the animation
i liked the part where O2 went in and CO2 came out with a grumpy face. LOL
Buen video, se aprende mucho aquí.
Now I know some biology too, thanks.
This is really cute, and nicely done ^^.
Like the animation