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Blood Pressure in Arteries, Veins and Capillaries



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35 comments

  1. awesome explanation 👍👍👍

  2. I like the speed and momentum in ur teaching. It keeps us awake… thanks a lot

  3. Why there is high resistance in arterioles since cross sectional area is high please reply

  4. Nice video. I have a question, though (if it's not too late to ask as this video was posted some time ago). At around 5:00 min, you say that the reason why the pressure decreases int the arterioles is that there is more resistance, and resistance decreases pressure. Yet, according to the equation dP = Q x R, resistance actually increases pressure. Later on, you explain that the combined diameter of capillaries is far greater that that of the arteries, explaining why the pressure drops. Wouldn't the same rationale apply to the arterioles, as their combined diameter is greater than that of the combined diameter of the arteries? If so, then one could easily explain the pressure drop by a greater drop in Q than a R increase per vessel, OR, by keeping Q constant and comparing the actual R decrease when all vessels are combined. Have I missed something, here?

  5. You are 100x better at teaching than my professor! Thank you.💗💗

  6. If we have 60,000 miles of blood veins in our body,that means we have at best 10 to 50 miles of arteries that we could (see)..AND THE arterioles ,,,we have 59,000 miles ,that would be leaving 1000 miles for veins and arteries,,, if you could (see) that many ,,,and its this,,, why dont you just say it. instead of making it so complicated to people……😑we have 60,000 miles of vaines,arteries, arterioles your pumping( two tree root systems connected by the arterioles.)…we can see Arteries,veins capillaries easily but arterioles we cant see there so small and there's 59000 miles leaving 10000 for the ones ,or the bigger ,whitch are called veins and so on……..

  7. Amazing enunciation, perfect speed and pitch, smart planning of order of the information, and a high level of clarity

    Thnxxxx a million and keep up the good work 💪🏻

  8. Excellent instruction – Thank you for taking the time

  9. I have a question tha either velocity of vena cava is higher or capillary??

  10. How do veins move blood upward against gravity?

  11. i can just say thank u…. for all the energy and time

  12. When u explained capillary u said that for the efficient change rate of flow should be relatively slow then y are u saying Q=AV flow is constant

  13. I am 1st year student n ur videos are pretty helpful
    Thanks bro

  14. what is the average length of a lysozyme? I need help urgently. Thank you

  15. i jst follow ur lectures all the time because ur explanations are very undersrstandable and make my work very easier….thank you so much

  16. For the diagram, it makes sense the way he explained it. But I'm confused as to why the pressure in the veins is lower than in the arteries because veins have a great amount of skeletal muscle to be able to increase the pressure and push it back up to the heart. Is the pressure generated by skeletal muscle in the vein enough to make blood return to the heart, but still lower than in the ateries?

  17. veins do not thick tunica media, they have thick tunica externa, correct it,

  18. I love your videos and I dread the day that your content no longer corresponds to my courses. Hands down best educational channel I've ever used! Keep up the amazing work!

  19. sir u gays r doing really good and meaking subject so so so simple we love u gays

  20. all your lectures are amazing, great teacher!

  21. sir, you are an amazing teacher 👍👍👍👍

  22. Hi! I've watched your physics videos. The cardio vascular series are of poor quality. The writings on the board are not legible. 🙁

  23. how come the continuity equation does not apply to the arterioles? wouldn't having a smaller cross sectional area increase velocity? or is cross sectional arteriole area very high?

  24. -So in arteries the recoil ability due to Smooth muscle in Tunica media being Higher , causes Higher pressure hence higher Velocity( propelling the blood)
    – In cappillaries the surface area is Very big so the speed/velocity decreases
    -In Vein the recoil is low, hence pressure is low hence velocity is low .

    Did i get it correctly? , and do the cappillaries still have the slowest Velocity ?
    THANK YOU!

  25. This is great! I am a pre-nursing student and this gave me so much clarity and answered all my questions!

  26. I have exactly the same doubt as @dyoomah17
    When there is a smaller diameter, there is more resistance, blood pressure is supossed to rise because more pressure is needed to keep the blood flowing. Still it is true that the blood pressure decreases in arterioles, but why is this?
    Also, resistance is related to the lenght of the vessel, the longer the way, the more resistance…
    I know there is an explanation, I just can't figure it out!

  27. your lectures are very helpful for my aipmt (all india pre-medical test) thanx a lot!!!!
    and god bless u AK 🙂

  28. Can I determine the pressure by the diameter ? I always ask a question and connot found answer .. why the arterioles have lower pressure than arteries , it should have higher pressure because it has smaller diameter and higher resistance so more pressure exerted on the wall . This is according to what I studied in physics when the diameter decrease the pressure increase .
    Can you clarify this for me please !

  29. This should definitely have more than 500 views! You're a very good teacher (actually more than just a good teacher you are a very good "pédagogue" (word in french untranslatable in english)). I wish you would be the one teaching my courses. What majors have you studied to know all that?

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