049 What Stroke Volume is and How to Calculate it

[noyon25]

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[Prettysrican007]

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[asisshtt]

thank you!!!

[LINLAN22]

i like u r videos soooo much it really did help me alot because i am pharmaceutical student so thank u and keep up the great work ^_^ u really make biology fun

[InteractiveBiology]

@LINLAN22 Glad to know this video helped and you're finding them fun to watch. We have more at the site that you might find helpful... STay tuned, we have more Biology videos coming soon!

[bearnextdoor1]

really thank u...

it really work for studying after class

[InteractiveBiology]

@bearnextdoor1 great! :) Stay tuned. There will be more Biology videos uploaded very soon. Good luck with your studies!

[bearnextdoor1]

@InteractiveBiology : Thank you for your sincere kindness :D

[InteractiveBiology]

@bearnextdoor1 You're welcome :)

[kirkferentzrocks]

passing med school with these!

[InteractiveBiology]

@kirkferentzrocks Go! Go! Go! :) Glad you're finding value in our videos. Stay tuned for more! :)

[MaficSun]

Thanks

[InteractiveBiology]

@MaficSun You're very much welcome! Stay tuned for more Biology videos coming very soon!

[sueha62]

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[InteractiveBiology]

@sueha62 You're very much welcome. Glad that you found value in the videos. Stay tuned for more :)

[Elsabicton]

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[InteractiveBiology]

@Elsabicton Wow! Does this mean you passed the exam? CONGRATULATIONS!

[Elsabicton]

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[XOXringetteOXO]

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[InteractiveBiology]

@XOXringetteOXO That's AWESOME. CONGRATULATIONS!!!!

[jennyjunaRN]

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[InteractiveBiology]

@jennyjunaRN You are very much welcome. Thank you so much for your feedback. Stay tuned for many more videos.

[dom8691]

1:20



[MichelleOriana]

You are the bomb!!! I'm in Nursing school and this really helps me. I can be a better nurse because of you!

[InteractiveBiology]

@MichelleOriana LOL, thanks. I like exploding :D

Glad to know it's helping. All the best in your nursing career.

[Domfit]

You are amazing, i have an huge exam tomorrow and your vids are helping me sooo much! Wish i'd found you before today so i could've watched every one in time for tomorrow! :)

[InteractiveBiology]

@Domfit Better late than never. Glad it's helping :)

[TimmysMummy]

you are a super star... your work is so clear, and well explained. Thankyou thankyou and thankyou again. I too am on my way to having watched all your videos. Making physiology fun !!! I had a look at your website too... I love it ... would def recommend it to other ppl who love your vids xxx

[InteractiveBiology]

@TimmysMummy LOL, You are welcome, you are welcome, you are very much welcome. Glad you are enjoying it so much :D

[letty3434]

I also have here another question for my exam. Question is, In response to 12 weeks of aerobic exercise training, which of the following would you expect to find. The answer is No Change in resting Cardiac Output. I chose An Increase IN Maximal Exercise Heart Rate. As you can see I am really not understanding this at all. Thank you much!

[InteractiveBiology]

@letty3434 This is another one for Episode 53. Cardiac output stays the same. That's because stroke volume increases and heart rate decreases. CO = SV * HR. They balance each other out. Check episode 53 for a more detailed explanation.

[letty3434]

Wondering if you can help me with a question. I am preparing for an exam. The question is Which physiological adaptation would decrease after 12weeks of regular exercise training. The answer is end systolic volume. I got it wrong on my practice exam. I am having a hard time figuring out these types of questions. All in all I don't understand the material. In the practice exam I chose The Duration of the Cardiac Cycle. Can you explain and help me? Thank you so much!

[InteractiveBiology]

@letty3434 With regular exercise, one of the things that happens is that the heart gets more efficient at pumping blood. In other words, our Cardiac output increases. One of the ways of doing that is by decreasing End Systolic Volume. I talk about that in episode 50. Check it out and it should help you understand it.

[letty3434]

@InteractiveBiology Hello again, Thank you for responding to my question. I understand the very first sentence but still don't know why the END SYSTOLIC VOLUME would be the answer to the question. I am still trying to figure out how or why the ESV would decrease after 12 weeks of regular exercise training. Thank you again!

[InteractiveBiology]

@letty3434 You should check out the video I uploaded today - Episode 53. That will help. The main idea is that with regular exercise, the heart gets better at ejecting blood from the heart. Everytime it beats, it send out MORE blood than in an untrained person. In other words, there will be LESS blood in the heart after it contracts. That is the End Systolic Volume and it is decreased. Once again, check out Episode 53.

[petercourt]

You are helping lots of people! No doubt. Sorry to bombard you with questions! Thanks for all the videos

[InteractiveBiology]

@petercourt Oh hey, Not a problem. Glad to see people interacting with the content. All the best to you!