100 Replies to “The Circulatory System”

  1. Mr. Anderson, thank you so much for helping me about the different systems. My bio teacher is not that good at teaching(believe me she sucks) but you are amazing. Thanks again

  2. thankyou sir…you are a fabulous teacher…your explanation was really helpful to me to understand what really happens inside the heart..thanks once again😇

  3. Thanks for the video but I think you missed the last part. The Heart does not contain carotid artery but it does have coronary artery to supply blood to the heart tissues.

  4. Great, amazing, you are one of the most spectacular people I will never get board from listening to them.. thank you so much!!!

  5. Correction: you forgot about left semilunar valve and the artery is thicker than the vein, because it is going away from heart instead of being "weaker."

  6. You called the blood vessels on the surface of the heart Carotid arteries. The carotid artery is what supplies the brain with blood. The blood vessels on the heart are called the coronary arteries.

  7. U are amazing sir …..
    U teached it with such an ease that now I'm clear with all my concepts . All thanks to u sir☺☺

  8. This shits whack, in class as an assignment 😂😂😩😩😩👌👌👌😩😩😩😩👅👅👅💧💧💩

  9. Deoxygenated blood does however have a darker red color than oxygenated blood, which assist in making it appear more blueish through the skin.

  10. Some people knows the knowledge well but they fail to convey it. You are both knowledgable and teachable! Your videos are very helpful for me!

  11. Excellent and informative video! Check out the BIOL-O-GEE R.A.P. music video about the heart: https://youtu.be/U2WG4gRt1yE

  12. One time when I was young I accidentally stepped on something outside and it cut the bottom of my foot. it was either a rock, glass whatever it was and the blood that came out was blue and then it turned red when it hit the air.

  13. Finding your videos makes me beam with joy. Anytime I am overwhelmed and confused, it brings comfort to me to find your explanations show up from my YouTube searches.

  14. Love your stuff thanks for teaching. Wondering about the heart as a regulation function on the blood rather than a pump per say, in relation to the work of Frank Chester for instance.

  15. YES, that's useful, like the rest of your videos. Thank you so much.

    I love the slight corrections that you can add to the video without interruption.

  16. The "LUB DUB" sound that we hear is not because atrium and ventricle contraction and relaxation. The "LUB" sound is because of the closing of the atrioventricular valves (tricuspid and mitral) and the "DUB" sound is because of the closing of the semilunar valves (pulmonary and aortic).

  17. Thank you! man you are awesome I love how you explain things, for some reason I listen and pay attention to you, completely 🤣👍👍

  18. Great video awesome if you were my teacher I would of passed Biology with a A+ instead of a B-😞 which I got because of extra credit.

  19. i've seen people point out the coronary artery not carotid arteries in the comments already, but the lub dub is actually the sound of the health valves closing! the lub is when the atrioventricular valves (tricuspid and bicuspid/mitral) close, and the dub is when the semilunar valves (aortic and pulmonary) close!

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