Name: 炎症反応 (Inflammatory Response)
Uploaded: 2021-01-14T05:38:12.000Z
Duration: 14 min 35 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

We've all had cuts on our finger or wherever else on our

body, and immediately that part of the body gets a little

bit of redness, a little bit of swelling, some heat maybe,

and, of course, there'll be some pain associated with

And in general, this set of symptoms that we experience,

these are known as the inflammatory response, or you

might say that there's some inflammation going on there.

And people have known about this I guess ever since really

I think probably with modern medicine, people have been a

little bit more particular about actually classifying the

symptoms, but this isn't anything new for someone to

say that there's some type of inflammation going on or some

But what I want to do in this video is understand what's

causing these-- I guess we can call them macrosymptoms.

Because, really, the inflammatory response is

Our first line of defense is our skin or the fluids on the

outside of our skin or the mucous membranes, but the

inflammatory response is what happens when something gets

We get punctured with a nail, or there's some type of virus

or bacteria gets beyond our skin or the mucus that

This is the field of battle, especially the

So let's set up an immune battle so we can see exactly

what's going on with the inflammatory response.

Immunology, is still a very under understood field.

People are still discovering the mechanisms

I'm sure we'll probably be studying this for a

So what I'm going to talk about is just the overview,

just you know the general actors and you know in general

what's causing the redness, the swelling, the

everything, but it's really just to give an idea of what

So those are some skin cells in there, and then I'm going

to-- so this is the outside world right here.

Then amongst those skin cells, I'll do some other cells.

Let's call this cell right here a mast cell.

And if you remember from the videos on phagocytic action or

phagocytes, you'll remember there was one type called

dendritic cells and they tend to hang out near our skin.

They kind of hang out near areas that might interface

I'll draw a couple of dendritic cells and these are

They have no relation to the nervous system.

They just look like they have dendrites on them and that's

why they call them dendritic, but they're really phagocytes

and they tend to be near external interfaces and they

phagocytose particles and they're good at presenting

them to helper T-cells so that they can get activated and

So this is just a normal, functioning, happy skin.

Over here, this is the interstitial fluid.

That's just a fancy word for the fluid that cells are kind

of being surrounded by or that bathe cells.

The cells aren't all directly connected to

The oxygen goes from the circulatory system to the

So everything is directly connected to capillaries, but

capillaries play a big role in our circulatory system.

Instead of just drawing them as tubes, I'm actually going

to draw the cells of our circulatory system.

So let's say that this down here-- these are the

So these are literally the cells that make up the walls

If I were to-- I would draw it as a tube somehow.

So these are capillary endothelial cells, and of

course, right in here, we have our blood flowing and we'll

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炎症反応 (Inflammatory Response)

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