your going to save me from failing i’m so happy i’ve found this channel you describe things in such a way that makes it easy to remember and get to grips with, I really struggled with this in class but this really helped me understand
This is my first time to watch your videos , but honestly I’m loving 🥰 them already. The videos are calm and easy to understand. Also explanation spot on 👍👍🏿👍🏿👍🏿
Super helpful video thank you so much. I am a mature student learning medical herbalism and our anatomy and physiology studies are quite intense so this has been very helpful thank you.
wow im so glad i found your channel! i do OCR A biology and i hate the way the textbook explains the heart structure its so confusing😭 Thankfully i understand it now thanks to you! new sub 💜
thankyou for this, im rarely in school at the moment due to health and personal reasons. my attendance is about 35%. your videos are really helpful for teaching myself at home :')
I'm really pleased they are helping you. I don't know if you have seen my intro video, but this is why I started the channel. I was really ill and had very low attendance due to this during a few years of my education, it is really tough but it sounds like you are being really proactive and independent. Wishing you all the best.
@@MissEstruchBiology I will watch it now :) Yeah it's difficult but I'm starting to get back into the swing of things again now, I'm sure your videos will continue to help me out a lot so thankyou again! Have you finished the A- Level spec or are you working through it currently?
don't have anywhere to make notes so I'm doing them here lol just ignore this coronary arteries - on the outside of the heart - supply oxygenated blood to the muscles - branch off the aorta - blockages cause a heart attack (myocardial infarction) because oxygen can't reach the cardial muscle chambers - top is atria, bottom is ventricles, both have left and right chambers atria features - thinner muscular walls than ventricles - contain elastic so they can stretch when blood enters - don't need much muscle because they only pump it into the ventricles ventricles features - more musclular walls to enable larger contractions - creates a higher blood pressure so it can flow longer distances (to the lungs + rest of the body)
left ventricle has a thicker muscular wall than the right ventricle right ventricle doesn't need as much pressure because it pumps to the lungs - lower pressure means it moves slower slower is better when going to the lungs because it won't damage and capillaries, and the blood can pick up more oxygen
Hello, They relax when the AV valves are open,but when the AV valves shut ( to prevent backflow of blood and therefore unidirectional flow) the tendons become tense and help hold the valves shut against the pressure and prevent the valves prolapsing.
I don’t think cardiac muscle is on the AQA spec but could you please confirm this as you went through it in this video at the start I don’t think septum is in the spec too… I’m confused because am I supposed to learn this? :(
hello miss i have a question in my book it says that one of the reasons why the left ventricle has a thick wall is because it needs to produce sufficient force to overcome the elastic recoil of the arteries and for blood to reach the body extremes. my question is how is the elastic recoil working against the flow of blood from the heart IAL edexcel student
Hello, As the arteries recoil, as there are no valves it would force blood backwards and forwards IF it wasn't for the fact the L ventricle forces blood out at such high pressure. Hope that helps.
@@MissEstruchBiology what do you mean by forward and backward? i read about this topic and what i understood is that the recoiling of the arteries maintains the pressure to be high in the Aorta so we need a high pressure to open the semilunar valve
Hello Yes that is correct too. I mean forwards (away from heart) and backwards (back to the heart, which doesn't happen in arteries due to the pressure)
your going to save me from failing i’m so happy i’ve found this channel you describe things in such a way that makes it easy to remember and get to grips with, I really struggled with this in class but this really helped me understand
Hey Lucy 👋🏻
So glad you find the videos easy to follow and that they are helping you. Good luck with your studies 😊🤞
I absolutely love this channel! if I ever score an A* just know that you are the main reason behind it.
Edit:
I GOT A FULL RIDE SCHOLARSHIP!
Ah so happy to have helped, but if you get an A* it will be because of your hard work! 💪
Did you get an A*? @Fatima Adam
@@ishaahmer4964 I got an A in my AS Alhamdulillah
@@MissEstruchBiology THANK YOU SO MUCH MISS ESTRUCH ❤️❤️❤️ GOD BLESS YOU
@@Potatoesandchaos ooh
You're saving my biology grade, I'm so thankful
Ah so glad they videos are help you 😁😁😁
Im sitting my AS-Level Biology Structured paper tomorrow, this will really help me alot, thanks!!
Good luck!
how'd it go mate?
You are amazing! Thank you so much for your brilliant videos! binge-watching em now.
You're so welcome!!! Really hope it helps 😁😁
This is my first time to watch your videos , but honestly I’m loving 🥰 them already. The videos are calm and easy to understand. Also explanation spot on 👍👍🏿👍🏿👍🏿
ahh thank you so much 😊 I'm so pleased you are finding them all so helpful
Super helpful video thank you so much. I am a mature student learning medical herbalism and our anatomy and physiology studies are quite intense so this has been very helpful thank you.
Thanks, got a level paper 1 soon and binge watching ur videos
haha theyre easy to binge because theyre so short and concise
Ahhh good luck!!!!
wow im so glad i found your channel! i do OCR A biology and i hate the way the textbook explains the heart structure its so confusing😭 Thankfully i understand it now thanks to you! new sub 💜
ah yay!!!! I'm so grateful
You explain really well and in detail,love it.
thank you!!!!!
you explain really well and in detail,love it.
I'm so pleased it was helpful for you!!
thankyou for this, im rarely in school at the moment due to health and personal reasons. my attendance is about 35%. your videos are really helpful for teaching myself at home :')
I'm really pleased they are helping you. I don't know if you have seen my intro video, but this is why I started the channel. I was really ill and had very low attendance due to this during a few years of my education, it is really tough but it sounds like you are being really proactive and independent.
Wishing you all the best.
@@MissEstruchBiology I will watch it now :) Yeah it's difficult but I'm starting to get back into the swing of things again now, I'm sure your videos will continue to help me out a lot so thankyou again! Have you finished the A- Level spec or are you working through it currently?
yes, all of the a-level theory videos are uploaded
thank you so much!! your videos explain so well, really grateful for all the help miss! :)
don't have anywhere to make notes so I'm doing them here lol just ignore this
coronary arteries - on the outside of the heart
- supply oxygenated blood to the muscles
- branch off the aorta
- blockages cause a heart attack (myocardial infarction) because oxygen can't reach the cardial muscle
chambers - top is atria, bottom is ventricles, both have left and right chambers
atria features - thinner muscular walls than ventricles
- contain elastic so they can stretch when blood enters
- don't need much muscle because they only pump it into the ventricles
ventricles features - more musclular walls to enable larger contractions
- creates a higher blood pressure so it can flow longer distances (to the lungs + rest of the body)
left ventricle has a thicker muscular wall than the right ventricle
right ventricle doesn't need as much pressure because it pumps to the lungs - lower pressure means it moves slower
slower is better when going to the lungs because it won't damage and capillaries, and the blood can pick up more oxygen
Great video
i love haemoglobin, i love gas exchange but the heart…. my least favourite thing ever
Ms, should we learn all the labelling of the heart for international AS level???
hey! how is this all i need to know for ocr? thank you for the video :)
Hi, am I correct to say that the coronary arteries would be against the point that arteries take blood away from the heart? If that makes sense.
Hello ,
They are still taking bood away, as they are going to the cardiac muscle, not actually going into the inside of the heart and the chambers.
hope that helps 😊
Is this suited for the new spec?
yeah for AQA
@@MissEstruchBiology ah sweet
how do the chordae tendineae help with the unidirectional blood flow, i saw a question on it but didnt know how to answer
Hello,
They relax when the AV valves are open,but when the AV valves shut ( to prevent backflow of blood and therefore unidirectional flow) the tendons become tense and help hold the valves shut against the pressure and prevent the valves prolapsing.
I don’t think cardiac muscle is on the AQA spec but could you please confirm this as you went through it in this video at the start
I don’t think septum is in the spec too… I’m confused because am I supposed to learn this? :(
Hello,
Septum isnt, but you need to know the heart is made of cardiac muscle.
Hope that helps
hello miss i have a question in my book it says that one of the reasons why the left ventricle has a thick wall is because it needs to produce sufficient force to overcome the elastic recoil of the arteries and for blood to reach the body extremes. my question is how is the elastic recoil working against the flow of blood from the heart
IAL edexcel student
Hello,
As the arteries recoil, as there are no valves it would force blood backwards and forwards IF it wasn't for the fact the L ventricle forces blood out at such high pressure. Hope that helps.
@@MissEstruchBiology what do you mean by forward and backward?
i read about this topic and what i understood is that the recoiling of the arteries maintains the pressure to be high in the Aorta so we need a high pressure to open the semilunar valve
Hello
Yes that is correct too.
I mean forwards (away from heart) and backwards (back to the heart, which doesn't happen in arteries due to the pressure)
I wish I found your channel earlier
awww hope it is still helping you now
@@MissEstruchBiology It is :)