This lecture really help me understand vasodilation & vasoconstriction it's been a while since I've had any chemistry.

Another great lecture from you!!! make everything so much clearer. Getting me through my first year of nursing.

@Manzil.Deen2280

Жыл бұрын

kzread.info/dash/bejne/qH-hqdx_c9edeps.html

I thought capillaries don’t have smooth muscle, just a single layer of epithelial cells. So how can vasoconstriction and vasodilation occur?

very helpful, my school is using this vid to explain to us

To not waste your time watching this video When body temperature is too high blood vessels dilate to increase heat loss to surroundings When body temperature is too cold blood vessels contract to avoid heat loss to surrounds

@ellie-maesmith7628

3 жыл бұрын

Yes!!

@sultanalromaithi8819

2 жыл бұрын

Thanks, this comment helps alot!

@kookbaring4328

2 жыл бұрын

Thank you very much 😊

@Manzil.Deen2280

Жыл бұрын

kzread.info/dash/bejne/qH-hqdx_c9edeps.html

u brillent me bht acha smj rahi hu excellent 😇😊💯 understand

I thought capillaries don't vasoconstrict or dilate, but the arterioles leading to them?

Thought small capillaries do not have smoooth muscles around them

"What would you do if it were getting too hot in your house?".... Me: turn the a/c up! ...."open the windows!" I forget people that don't live in Arizona actually open windows to let heat out.

I don't think that the factor for dilution or contraction of the capillaries is "hot out" or "cold out" but rather increasing or decreasing temperature of the body itself.

Ok I knew that vasodilation will allow you to lose heat. But how does it do that specifically? How is more blood in the blood vessel helps heat to be radiated to the surroundings?

This is counterintuitive as someone living in Texas, but I just have to remember that it is. Lol

"I am going to draw skin in pink, because skin is pink"...

@halloheimur

Жыл бұрын

came looking for this comment, pretty fucked up

I have this and it’s a serious problem…. Doctors won’t help me and I am dying

is this called convection then ?

"because skin is pink" :/ weird comment when the majority of the world does not have pink skin

@anannyo2002

Жыл бұрын

Stfup niga🤣🤣🤣🤣🤣

@samdottori

Жыл бұрын

I don't think he said it maliciously, I'd rather focus on the exam

@conradpinto

7 ай бұрын

Skin is pink. It gets darker the more melanin each ethnicity secretes. Also one important fact here, skin "appears" to be pink because of the blood underneath it. In reality skin is colorless; it is translucent.

i think he has a cold

Skin is pink 👀

but seriously, this comment about pink skin kinda throws you off

@samarthdhole6346

6 жыл бұрын

D. V. WORD, didn't expect that from khan academy

@nicolejohnson9493

5 жыл бұрын

I'm sure he didn't mean it like that and I'm sure u kno that.

@stavshmueli6932

5 жыл бұрын

Are you really going to complain about such benign comment? What a pathetic individual you must be that this remark actually caused you distress, knowing full well that he didn't intend it in any racist way. This is coming for a non-white person btw, just shame on you, really.

@gabriellayao2671

5 жыл бұрын

He clearly was referring to his color scheme for this specific video. It's not that deep.

@dimkacracker

4 жыл бұрын

@@nicolejohnson9493 sjws gotta find ways to be offended.