I am studying medicine and i must say, Anatomy is so much easier and understandable with Mr. Webster! Thank you for taking time and uploading the videos! In 15 years I will tell my assistants I’ve learned the most by Mr. Webster! Thank you Sir.
My favored mnemonic for the av valves is "tri before you bi" (as in the phrase "try before you buy"). Blood goes through the tricuspid valve before it goes through the bicuspid/mitral valve.
best one I had was from my cardio lecturer in Swansea Uni, not 100% PC: Mitral is always on the left because bishops (a 'mitre' is the headdress worn by bishops) are never right.
Sam you deserve an Award/accolade just named after you. You are extremely talented in a way that you make even the simplest of all things in Anatomy even simpler! You are a gift to mankind. Thank you!
I’m 80 years old. Heart failure due to a virus in 1970. I currently have an ICD. My EF is in and around 15. I have never understood (to my satisfaction) what is really happening with my heart. And then I found you. Thank you so much for teaching me what I’ve failed to learn over so many years. You are blessed to have your teaching skills and I’m blessed to have you. Thank you from the bottom of my heart (no pun intended). ❤
I'm not in the medical field, but was interested to have general knowledge about how the heart works, and now I'm interested in the whole human body anatomy! Brilliant smooth way to share your knowledge Dr. Drake Ramoray
1:10 please do!!! I’d really love much more detail. This (relatively) short video explained flawlessly wot 10-hour lectures don’t. Thank you for your passion and really hope you do another video where you go into deeper details of the heart 😊
I am from india. Presently Preparing for NBDE exams. Sir, You are Gr8. Its been like I have never learned Anatomy of Heart earlier in my Bachelors like you are teaching. You are fantastic mentor. Thank you so much. Respect.
Thank you very much for your great work. You inspire me everyday to study for anatomy because you make this complex subject so easy to learn only because of your type of explanation. 🙏🏼
Fantastic anatomy videos! You did say that the base of the heart rests on the diaphragm which is incorrect according to my professor, anatomy text books, and the internet. The base of the heart is actually superior and medially located. The base is mostly composed of the left atrium (and some of the right atrium). I have found this concept a bit confusing but also an important one. THE HEART DOES NOT SIT ON IT'S BASE. Again thank you for the great videos i just wanted to clarify for others who may be confused.
Did I? Oops. Yes, the base of the heart is the opposite end to the apex. I guess I was thinking of the word "base" in the general way. Thanks for the clarification! You're doing what I always recommend - not relying on a single source of information (i.e. me).
I'm replying 6 years later, but like yupp that's what my professor told us as well. I kinda felt proud of myself for realizing the mistake of a lecturer (Sam Webster in here, lol) 😅😅😅 also i know this is so random, but like how are you 😭 did you graduate school? What are you doing? It feels like im talking to someone from the future cuz you were here 6 years before me xd
I am from Bangladeshi....This channel is very Helpfully,,,,, Anatomy, it is very important subject of medical line....... THANK YOU SIR,,,,,LOVE YOU SIR
can you make a video correlating anatomical position of organs to vertebrae? (it will make it easy to understand injuries at each level of vertebrae) thank you. your videos are a great help.
Every things makes sense and be clear with you , the naming behind mitral valve got me gasped ! 😂 , I have been trying to memorize the heart and keep forgetting it ! But YOU MAKE ANATOMY SO EASY AND CLEAAAAAR ( watching you from Africa , you have students all over the world )
At this point I watch this video on an annual basis ( because I always have to revise cardiology) but I'm not complaining, I learn more each time and remember even more later on 🌟
At 1:52 is not the base of the heart The base of the heart does not sit on the diaphragm!! It is the portion of heart that is bounded superiorly by the dividing pulmonary trunk and inferiorly by the post part of the atrioventricular groove.
If anyone is interested in parasympathetic and sympathetic innervation: Parasympathetic: Acetylcholine (ACh) released from the Vagus nerve, which terminates at the SA node, acts on muscarinic receptors (MAChr) to activate intracellular G-proteins within the SA nodal cells. These proteins inhibit the type T calcium channels whilst phosphorylating potassium channels. In essence, this results in the SA nodal cells becoming hyperpolarised and thus taking longer to reach their pacemaker potential threshold of -40mV. The overall result of this is a reduced heart rate. Sympathetic: Noradrenaline is released by post-ganglionic efferent close to the SA node where it binds to Beta 1 receptors and activates Gs protein complexes on the intracellular surface. These proteins a activate a CAmp second messenger system and protein kinases which ultimately phosphorylate the calcium and sodium channels increasing conductance for their respective ions. In essence, the -40mV threshold to the pacemaker potential is attained quicker and heart rate thus in increases. There's also a complex interaction between the nucleus tractus solaris, nucleus ambiguus, and cardiac vagal neurons that control heart rate but that's perhaps beyond the scope of this comment section. If you want to know though just ask.
I would say (just not to be mislead by the misconception of the "blue blood") that the deoxygenated blood (low saturation of O2) is actually dark red, instead the red bright color of the blood is actually related to the oxygenated blood of almost all the arteries. Only some arthropods use hemocyanin in their hemolymph which is copper-rich fluid analogous to our blood and it's blue. By the way I think it was just a conceptual explanation, not really a correction, just to clarify. Prof. Webster thanks again from formidable lectures, it's pretty catchy! 💓 (I'm aware this heart emoji is anatomically incorrect!)
How does the opening between the two atria close when the baby is born? Is there some way it slams shut when the baby takes its first breath? Or does it grow in slowly, and you have what amounts to a two-chamber heart for the first few months of your life?
Fantastic job as always! Got a bit confused though, when you talked about aortic valve incompetence you said a possible outcome would be swelling of the extremities. Shouldn’t it be pulmonary edema? 🤔 or maybe I’m just mixing things up.
I am studying medicine and i must say, Anatomy is so much easier and understandable with Mr. Webster! Thank you for taking time and uploading the videos! In 15 years I will tell my assistants I’ve learned the most by Mr. Webster! Thank you Sir.
My favored mnemonic for the av valves is "tri before you bi" (as in the phrase "try before you buy"). Blood goes through the tricuspid valve before it goes through the bicuspid/mitral valve.
My favourite is "bi in Urdu means left".
my favorite is tRI,..RIght, "RI" you see the point RIght? ;)
best one I had was from my cardio lecturer in Swansea Uni, not 100% PC:
Mitral is always on the left because bishops (a 'mitre' is the headdress worn by bishops) are never right.
"tri" to be "right"
Mine is saying Mitral as
Mi-TWO-ra-L
So Two is Bicuspid and last letter L stands for Left side
Sam you deserve an Award/accolade just named after you. You are extremely talented in a way that you make even the simplest of all things in Anatomy even simpler! You are a gift to mankind. Thank you!
t-RI-cuspid for RI-ght side of heart (A/V). that's how I remember which is which
Mine is saying Mitral as
Mi-TWO-ra-L
So Two is Bicuspid and last letter L stands for Left side
you ride a tri cycle before a bi cycle
@@kellyslone989 love this one
@@godspeed5428 so good.
Someone in my class said Always TRI to do the RIGHT thing, so tricuspid and right
For the first time ever I have finally understood the anatomy of the heart. You are amazing.
I’m 80 years old. Heart failure due to a virus in 1970. I currently have an ICD. My EF is in and around 15. I have never understood (to my satisfaction) what is really happening with my heart. And then I found you. Thank you so much for teaching me what I’ve failed to learn over so many years. You are blessed to have your teaching skills and I’m blessed to have you. Thank you from the bottom of my heart (no pun intended). ❤
To be honest, you're the best anatomy lecturer I know. You make it even simpler to understand and recall. Much love and thanks
I wish you could be my university teacher! Wish the profs taught like you!
Thank you so much for your amazing videos! 🤓😃
I respect my prof but he moans every 2 seconds which makes is hard to focus 🤭
I'm not in the medical field, but was interested to have general knowledge about how the heart works, and now I'm interested in the whole human body anatomy!
Brilliant smooth way to share your knowledge Dr. Drake Ramoray
The Best Human Heart Anatomy video.....
1:10 please do!!! I’d really love much more detail. This (relatively) short video explained flawlessly wot 10-hour lectures don’t. Thank you for your passion and really hope you do another video where you go into deeper details of the heart 😊
I am from india. Presently Preparing for NBDE exams. Sir, You are Gr8. Its been like I have never learned Anatomy of Heart earlier in my Bachelors like you are teaching. You are fantastic mentor. Thank you so much. Respect.
Thank you so much for making this! One of the BEST videos for heart anatomy I've found. Really great supplement for my human gross anatomy course.
Hey Mr sam i have a friend that watches ur videos and reexplain them to me perfectly so thank u so much for helping us
Sam really enjoys anatomy😅, look at his expression at 11:50😭🤣, you doing a great job Sam i really appreciate your work🙌💯🙏
Thank you very much for your great work. You inspire me everyday to study for anatomy because you make this complex subject so easy to learn only because of your type of explanation. 🙏🏼
You are incredibly helpful and very engaging to watch. Thank you!
Fantastic anatomy videos! You did say that the base of the heart rests on the diaphragm which is incorrect according to my professor, anatomy text books, and the internet. The base of the heart is actually superior and medially located. The base is mostly composed of the left atrium (and some of the right atrium). I have found this concept a bit confusing but also an important one. THE HEART DOES NOT SIT ON IT'S BASE. Again thank you for the great videos i just wanted to clarify for others who may be confused.
Did I? Oops. Yes, the base of the heart is the opposite end to the apex. I guess I was thinking of the word "base" in the general way. Thanks for the clarification! You're doing what I always recommend - not relying on a single source of information (i.e. me).
@@SamWebster it got me
Diaphragmatic surface of heart lies on the central tendon of diaphragm
I'm replying 6 years later, but like yupp that's what my professor told us as well. I kinda felt proud of myself for realizing the mistake of a lecturer (Sam Webster in here, lol) 😅😅😅 also i know this is so random, but like how are you 😭 did you graduate school? What are you doing? It feels like im talking to someone from the future cuz you were here 6 years before me xd
All of these anatomy videos are so helpful. Thank you.
Besides the excellent explanation , what makes your video so good is your humor...LOVE IT! keep it coming Chief
You are a wonderful teacher... you dissect the heart to a simple understanding ... thanks
I study BSc Cardiac Physiology and these videos have been a god send - thank you!
I am from Bangladeshi....This channel is very Helpfully,,,,, Anatomy, it is very important subject of medical line.......
THANK YOU SIR,,,,,LOVE YOU SIR
The best video about the human heart...
The best video about the anatomy of heart...
I have watched this video for several times.Very useful
I admire you for making explanation easy to understand.
this guy is the undisputed greatest
This video is exactly what I've been looking for- THANK YOU!!!!
Would love to hear more about interatrial communication diseases. Great video, as always!
Thanks for making me understand more deeply about heart😊
From India🇮🇳
You made things so easy for me to understand at a time. Thanks for this video.
This has been the best segmented time stamped video requesting future videos to be like this...🙌🙌🙏🙏
Ur models are deadly original🤯🤯....a big thanks to you
Somebody please play him to do physiology 😫
Agreed!!!!
I would pay him!!
Dr. Najeeb is good at it.
SA node - AV node - Bundle of his- right - left- purkinje fibres
Just today I had a class on anatomy of heart and I swear I didn't get a thing . Thankyou so much . Your lecture was really helpful
This is anatomy for real, I have every bit of it. You are making me love anatomy, good work, keep it up ♥️
You are amazing teacher
You made my life easy
You made anatomy easy
Plz make physio videos for us tooo
Thankyou so much
can you make a video correlating anatomical position of organs to vertebrae? (it will make it easy to understand injuries at each level of vertebrae) thank you. your videos are a great help.
Wonderful..... I am having trouble studying anatomy... And your videos made my life so much easier 🤓🤓😎😎
You’ve made my life so much easier Sam ... Thank you so much 😊 😊
Thanks! Writing a paper on tetralogy of fallot with no prior knowledge on heart anatomy. This helped tremendously!
Every things makes sense and be clear with you , the naming behind mitral valve got me gasped ! 😂 , I have been trying to memorize the heart and keep forgetting it ! But YOU MAKE ANATOMY SO EASY AND CLEAAAAAR ( watching you from Africa , you have students all over the world )
Watched this just before the anatomy dissection clz. Thanks Sam!!
you should be my instructure ,for you are awesome!. God blessed you!
awesome! got a heart quiz in bio145 anatomy and physiology this week, appreciate these videos
11:46 me explaining something I have no idea about in final exam.
😂😂
At 1:50 that Is inferior or diaphragmatic surface of the heart not the 'BASE'.
you re sweet and smart and fun and i love your accent, you do great job
This is a great and very clear video, I like very much how you explain it. Thank you!
Great video.🎉Thanks...
TFW you find doctor house giving anatomy lessons on youtube
Dude that’s what I was thinking the whole entire time 🤦🏻♀️
I love that Sam left in the mysterious screams at 22:44
Very Nicely Explained Sir.. Easy to remember the anatomy of heart thanx to your video lecture..
At this point I watch this video on an annual basis ( because I always have to revise cardiology) but I'm not complaining, I learn more each time and remember even more later on 🌟
You are always the best! Thank you so much. I can watch your videos like a movie and learn a lot from it. Please do make more videos and lectures.
How beautifully explained
You are a great anatomy teacher
Allah bless you sir
as always , I'm thankful and totally owe you my knowledge , merci
Thank you so much Professor for explaining heart anatomy in such a beautiful way. Because of you I am able to pass my control.
Good heart anatomy video.
At 1:52 is not the base of the heart
The base of the heart does not sit on the diaphragm!!
It is the portion of heart that is bounded superiorly by the dividing pulmonary trunk and inferiorly by the post part of the atrioventricular groove.
Amazing and easy to remember! Thank you
11:47 😂😂😂 I loved this! extremely helpful and informative, thank you!
😂😂😂
i was looking for this comment to keep replaying it! XD it's the best and funny
Was also looking for this comment hahahaha
Understanding everything from you Dr thanks for clear explanation God bless you🙏🙏🙏
Intresting stuff... Ur mannerism is also fascinating
This video is really helpful. Thanks to Sam.
An aluminum casting of the heart lumen would be very useful.
These videos are therapeutic
Sir u are the best teacher...i literally mean this to u all hail down to mr. Sam webster⚘⚘⚘
Tq sir... It helps me a lot.......from India... I only watch your video and give Viva...
same bro, same
Pls go into the details.. pls go crazy.🙏.. its always fun learning from u.
Wonderful job, Sam Webster! Thank you!!!
Incredible
sir your'e way of teaching is great 🙏❤️
If anyone is interested in parasympathetic and sympathetic innervation:
Parasympathetic: Acetylcholine (ACh) released from the Vagus nerve, which terminates at the SA node, acts on muscarinic receptors (MAChr) to activate intracellular G-proteins within the SA nodal cells. These proteins inhibit the type T calcium channels whilst phosphorylating potassium channels. In essence, this results in the SA nodal cells becoming hyperpolarised and thus taking longer to reach their pacemaker potential threshold of -40mV. The overall result of this is a reduced heart rate.
Sympathetic: Noradrenaline is released by post-ganglionic efferent close to the SA node where it binds to Beta 1 receptors and activates Gs protein complexes on the intracellular surface. These proteins a activate a CAmp second messenger system and protein kinases which ultimately phosphorylate the calcium and sodium channels increasing conductance for their respective ions. In essence, the -40mV threshold to the pacemaker potential is attained quicker and heart rate thus in increases.
There's also a complex interaction between the nucleus tractus solaris, nucleus ambiguus, and cardiac vagal neurons that control heart rate but that's perhaps beyond the scope of this comment section. If you want to know though just ask.
I would say (just not to be mislead by the misconception of the "blue blood") that the deoxygenated blood (low saturation of O2) is actually dark red, instead the red bright color of the blood is actually related to the oxygenated blood of almost all the arteries.
Only some arthropods use hemocyanin in their hemolymph which is copper-rich fluid analogous to our blood and it's blue.
By the way I think it was just a conceptual explanation, not really a correction, just to clarify.
Prof. Webster thanks again from formidable lectures, it's pretty catchy! 💓 (I'm aware this heart emoji is anatomically incorrect!)
Good video about the anatomy of the human heart 🫀.
your videos are awesome sir!
Brilliant how he explains things to you...
Thank you so much, this video really help me a lot .
Digitalisation has made learning so easier. God!
I DO love this video.😎
I'm sure I'll be able to pass n not have a panic attack bc of you ...thank you lots
A great video about human heart.
Sam! You are AWESOME!
Really amazing method of teaching
My Anatomy mentor ♥️
Another tip to remember the valve names RAT and LAMB = Right Atrioventricular valve/Tricuspid ....... Left Atrioventricular valve/Mitral/Bicuspid
How does the opening between the two atria close when the baby is born? Is there some way it slams shut when the baby takes its first breath? Or does it grow in slowly, and you have what amounts to a two-chamber heart for the first few months of your life?
Thanks for the explanation! You do it so great!!!
This channel Light side of anatomy
You are amazing! I appreciate these videos so much! Thank you!!!
Hi Sam, more critically about the lubb dubb sound. Should it be the sound that we hear is the blood hitting the valves after they have shut?
You are my saviour 🙌🏻
Fantastic job as always! Got a bit confused though, when you talked about aortic valve incompetence you said a possible outcome would be swelling of the extremities. Shouldn’t it be pulmonary edema? 🤔 or maybe I’m just mixing things up.
I would love to contradict, the base of the heart is not the diaphragmatic surface, its the the left atrium please check out
Love your visual aids. Wish I could get some without breaking the bank
Wonderful explanation sir
That is very helpful.Many thanks...🌷