What's inside of blood? | Lab values and concentrations | Health & Medicine | Khan Academy

Spin down your blood and find out what it's made up of. Rishi is a pediatric infectious disease physician and works at Khan Academy. Created by Rishi Desai.

Health & Medicine on Khan Academy: No organ quite symbolizes love like the heart. One reason may be that your heart helps you live, by moving ~5 liters (1.3 gallons) of blood through almost 100,000 kilometers (62,000 miles) of blood vessels every single minute! It has to do this all day, everyday, without ever taking a vacation! Now that is true love. Learn about how the heart works, how blood flows through the heart, where the blood goes after it leaves the heart, and what your heart is doing when it makes the sound “Lub Dub.”

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[agniology]

this is the neatest doctor's handwriting i've ever seen

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Great instructions - clear, concise, and organized. You have a gift for teaching.

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I also love your videos. I struggle retaining the content of my 2 hour nursing degree lectures. Its so much info I retain nothing actually. Now with the basics from your videos sitting snugly in my brain I feel like I can take the next step with the more complicated stuff. THANK YOU !!! I was about to give up but not now :)

[anilvj]

You teach more than that of my leacturer do for 1 hour with 8 min

[radhika]

I really enjoyed the video and the explanation. Clean simple explanation.

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[VincentQMusic]

THANK YOU SO This video was so helpful for me!

[shamirzz]

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[saramizzi]

I discovered your videos last year and started watching to help me pass my entrance exam to medical school and I here I am now watching these phlebotomy videos! Thank you for your diagrams and explaining this in a simpler way than my textbooks do :)

[richardl.currier]

rishi is much better than sal at teaching in my opinion. maybe because i am a visual learner and visuals appeal to me better than words.

[ishitab]

The lecture was so clear and crisp!! I absolutely loved it !

[tauriandud]

very informative and easy to understand

[trionamcelligott]

When using a refractometer you use the serum and plasma tp levels to get the fibrinogen. But you said the serum doesnt contain fibrinogen? Is it that the tp from the plasma figure minus the serum represents the content which is fibrinogen?

[MissNORY]

THANK YOU SO MUCH
i won't fail tomorrow thanks to your vid.

[yacchan]

thank you for the video. im japanese trying to enter a japanese medical school and that was really heipful!

[mkbh]

In terms of cholesterol, proteins and lipids. What is the difference between whole blood, plasma and serum ?

[carissawilkins]

Thanks for the video! Do you have any videos or plan to make any videos on clotting mechanisms? Would really appreciate it, thanks!

[BaoTran-lsoy]

Thank you for this video!
For those who questioned why the word "Serum" was used, Fibrinogen is used for blood clot. Therefore, "serum" contains substances that are left after blood clot and is used for variety of diagnostic procedures.