The Composition and Function of Blood

Of course we all know what blood is, and everyone has had at least a minor injury involving blood. But what is it exactly? What's it made of? What does it do? Why do we die if we lose enough of it? Let's check out each component of blood now, on both the cellular and molecular level!

Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience!

[cyruspaul]

I was in high school when I first started watching his lectures, didn't think I'd come here again, I'm a medical student now

[Shouttz]

Hey Professor Dave! Just wanted to thank you for the videos. It's really nice to have a single channel that explains a whole lot of stuff! I personally enjoy learning about a variety of things, so when I'm a bit tired of one specific topic I go read about geography, or biology, or something else.

It's nice to learn by reading but it's even better hearing someone who understands the stuff explain it, so thanks!

"But what is it exactly? What's it made of? What does it do?" that's legit me earlier today in the bathroom trying to remember what Van der Waals force is haha

[ethelshimanvule]

All the way from Zambia 🇿🇲
Thank you professor Dave you are saving lost academic souls 🥺🙏❤️

[FathomMage]

This is my favorite science youtube channel.

[michaelpisciarino]

0:09 Blood
0:45 Blood is considered a *Connective Tissue*
0:57 Formed elements suspended in plasma.

Put it in a Centrifuge, and it’s parts can be seen.

1:10 Red Blood Cells= Erythrocytes
Platelets And White Blood Cells= Buffy Coat
Plasma= Plasma

1:32 Blood transports Oxygen, nutrients, hormones, and Carbon Dioxide

2:00 + Regulates Ph
+ Maintain body temperature
+ Prevent infection

2:11 Plasma
Erythrocytes

3:10 The Red Blood Cell
3:38 Hemoglobin

[smartboyalex]

Ma dude P.Dave comin through with another banger. You helped me pass Chemistry, A&P I, and Microbiology with A's, and now your videos are helping me study for A&P II. Thanks for all your hard work and straight forward and easy to understand videos! You make learning these somewhat difficult topics so much easier!

[fredbeutler]

This is very interesting. I liked your concise description of the different components of blood.

[jl]

You made an overwhelming chapter so simple and easy. Great explanation and to the point. Thanks

[conman]

4:06 One thing I emphasize to my MCAT students is that there is a difference between oxygen molecules and oxygen atoms. Oxygen is diatomic in gaseous form so hemoglobin contains 4 oxygen molecules (O2) but 8 oxygen atoms (O).

[thimbleteeth]

I want to make a game with my own spin on the concept of “what if the human body was just a little place with a bunch of little guys in it” focusing mainly on blood cells. This video is incredibly helpful to me in my endeavors, and it is also simply very nice to be able to learn more about anatomy. Thank you, Professor Dave! :-)

[exoticblondestripper]

By far Theeee Best blood histology Video on YouTube hands down 🙌🙌🙌

[katongoleeverest]

Thanks u have helped me to pass biology

[matsapolahlogi]

Dave knows everything. Maths, Life Science and Physics

[ashley]

dude ily - watching these helps me a great deal before I dive into a chapter

[manthanpatel]

Platelets are also known as thrombocytes

[WattaKonneh-lc]

I am a first year student from Njala University in Sierra Leone🇸🇱

[monaoconnell]

Great! Very informative and easy to understand!

[shimmyslana]

anddd im back to the channel...night bwfore my biology exam. this definitely explained the concept in an easy way now i just need to memorise lol

[sevicapinheiro]

Thank you for a precise and good explanation of the composition of Blood. May God bless you!

[LMBeanz]

you just summed up what took me 12 hours to read from my bio book yesterday😂