So basically, a fit person has a lower heart rate but the same SV? But if it has more time to fill, would it not pump more blood thus increasing stroke volume? I dont get it...
@myalaynaangel - Correct! A fit person does have a lower heart rate. But they do NOT have the same stroke volume compared to a 'regular' persons heart. Remember, A fit heart is a slower heart. A slower heart allows for more blood to fill during each heart beat. More blood means a higher ejection fraction - or stroke volume per beat - but remember, the cardiac output of a fit heart and a normal heart at rest is the same. If I made a mistake in my video, my apologies - it was not intended.
:) Yes, I realized my after the video had been live for 3-months. I remember back in my college days, a professor of mine did the same thing. I think I picked it up via osmosis and it came out subconsciously. But his and my point was to demonstrate that oxygen rich blood is ejected from the left ventricle, no matter how childish our anatomy.
Could you do a vid specifically explaining both preload and afterload? and how various pathological processes affect them? Like how valve stenosis or regurgitation affect afterload of preload. Thanks!!
@AntoH I've been working on a follow-up to this video that covers those topics in-depth. I will be sure to notify you when it is posted, or you can subscribe to the channel to be alerted when it does.
@mrsmomo607 Awesome! I'm glad it helped. What class did this help you with? Thanks for your subscription as well. There will be more informative and helpful videos to come.
Stroke volume is the amount of blood (mL) ejected with ONE pump not amount in a minute
CO=HR(beats per minute) x SV(volume per single stroke/beat).
briznockolock 3 weeks ago
@briznockolock Thank you - yes, that is absolutely correct. My apologies for saying otherwise in the video.
DallasReeves 3 weeks ago
So basically, a fit person has a lower heart rate but the same SV? But if it has more time to fill, would it not pump more blood thus increasing stroke volume? I dont get it...
myalaynaangel 1 month ago
@myalaynaangel - Correct! A fit person does have a lower heart rate. But they do NOT have the same stroke volume compared to a 'regular' persons heart. Remember, A fit heart is a slower heart. A slower heart allows for more blood to fill during each heart beat. More blood means a higher ejection fraction - or stroke volume per beat - but remember, the cardiac output of a fit heart and a normal heart at rest is the same. If I made a mistake in my video, my apologies - it was not intended.
DallasReeves 1 month ago
:) Yes, I realized my after the video had been live for 3-months. I remember back in my college days, a professor of mine did the same thing. I think I picked it up via osmosis and it came out subconsciously. But his and my point was to demonstrate that oxygen rich blood is ejected from the left ventricle, no matter how childish our anatomy.
DallasReeves 5 months ago
great video!! But why did you draw aorta at the bottom of the heart???
aleksandr081 5 months ago
Great video, helped me with A&P II!
TiffanyOfNOLA 5 months ago
@TiffanyOfNOLA Thank you!
DallasReeves 5 months ago
Could you do a vid specifically explaining both preload and afterload? and how various pathological processes affect them? Like how valve stenosis or regurgitation affect afterload of preload. Thanks!!
AntoH 5 months ago
@AntoH I've been working on a follow-up to this video that covers those topics in-depth. I will be sure to notify you when it is posted, or you can subscribe to the channel to be alerted when it does.
DallasReeves 5 months ago
Your Welcome. I do my best!
DallasReeves 8 months ago
lol thanks for the music bud
saweezaaa 8 months ago
thank you for the info really helped me with my science homework :)
mrsmomo607 1 year ago
@mrsmomo607 Awesome! I'm glad it helped. What class did this help you with? Thanks for your subscription as well. There will be more informative and helpful videos to come.
DallasReeves 1 year ago
@DallasReeves :) oh it helped me with my extension question the teacher gave
couldnt really understand the stuff on wikipedia.
so this really helped :D
and im looking forward to it
mrsmomo607 1 year ago
iPad... <3
harisghole 1 year ago