Circulatory System and Pathway of Blood Through the Heart

Join the Amoeba Sisters in their introduction to the circulatory system and follow the pathway of blood as it travels through the heart! This video explains the importance of blood, arteries, and veins, and it also introduces basic heart anatomy including the atria, ventricles, and valves. Video has been dubbed using an artificial voice via aloud.area120.google.com to increase accessibility. You can change the audio track language in the Settings menu.
Table of Contents:
00:00 Intro
0:49 Blood
2:35 The Heart, Arteries, Veins, Capillaries, and Valves
4:08 Tracing the Pathway of Blood through the Heart
5:30 What about Coronary Arteries and Veins?
6:00 Quiz Yourself on the Pathway Blood Takes!
6:34 Important Note About Complexity of Cardiac Cycle
7:01 Atrial Septal Defect: an example of a heart defect
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Special thanks to Steven Powell, CRNA for assisting us in proofing this video.
FACTUAL REFERENCES:
Clark, M. A., Douglas, M., & Choi, J. (2018). Biology 2e. Houston, TX: OpenStax. openstax.org/books/biology-2e...
Atrial Septal Defect Information from the CDC: www.cdc.gov/ncbddd/heartdefec...
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FURTHER SUGGESTED READINGS:
This video mentions that hearts can have defects. Learn more from the CDC about heart defects:
www.cdc.gov/ncbddd/heartdefec...
This video doesn't go into the electrical system of the heart, but here is a good source from NIH that does!
www.nhlbi.nih.gov/health-topi...
Why do veins appear the color they do under the skin (when human blood is red)? This is a great read from The Conversation (a nonprofit organization that uses fact- and research-based journalism).
theconversation.com/ive-alway...
Want do learn more about cardiologists? Here are some resources that you may find useful regarding the role of a cardiologist:
www.cardiosmart.org/topics/ma...
www.texasheart.org/heart-heal...
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The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. Amoeba Sisters videos only cover concepts that Pinky is certified to teach, and they focus on her specialty: secondary life science. Learn more about our videos here: www.amoebasisters.com/our-videos
⭐We have a menu of our resources that complement our videos! Visit docs.google.com/spreadsheets/...
Support Us? www.amoebasisters.com/support-us
Our Resources:
Biology Playlist: • Amoeba Sisters Biology...
GIFs: www.amoebasisters.com/gifs.html
Handouts: www.amoebasisters.com/handout...
Comics: www.amoebasisters.com/paramec...
Unlectured Series: www.amoebasisters.com/unlectured
Connect with us!
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TIPS FOR VIEWING EDU KZbin VIDEOS:
Want to learn tips for viewing edu KZbin videos including changing the speed, language, viewing the transcript, etc? www.amoebasisters.com/pinkys-...
MUSIC:
Our intro music designed and performed by Jeremiah Cheshire.
End music in this video is listed free to use/no attribution required from the KZbin audio library kzbin.info...
COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See KZbin's community guidelines and how KZbin handles comments that are reported by the community. We also reserve the right to remove comments.
TRANSLATIONS:
Subtitulado: Tania Kobelkowsky Vidrio. Revisión: A. Romero, V. Álvarez, E. Téllez. Diplomado en traducción, ENALLT-UNAM, 2021
UPDATE: We have videos dubbed in Spanish and Portuguese using an artificial voice via aloud.area120.google.com to increase accessibility. Learn more as well as how to contribute subtitles in a different language here www.amoebasisters.com/pinkys-...

[@AmoebaSisters]

We have a resource that complements this video! Look under "Circulatory System" on the alphabetized list near the bottom of our handout page www.amoebasisters.com/handouts UPDATE: We have videos dubbed in Spanish and Portuguese using an artificial voice via aloud.area120.google.com to increase accessibility. See our Amoeba Sisters en Español channel kzbin.info/door/1Njo3LBy53cOPngz6ArV8Q and Amoeba Sisters em Português kzbin.info/door/YTQPX2X_mXe0ZMPi0fXxbg Want to help translate our subtitles in any language? Learn more here www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles

[@graciemosko1059]

I just watched the video and it wasn't wrong

[@justaviewer503]

@@graciemosko1059 because they removed the mistake from the video, duh.

[@monicaseely4862]

Not Wrong. Left and right are always switched when looking at someone else's anatomy because it is a mirror image.

[@khalidakanwal2054]

@@graciemosko1059 they edited it i think not sure

[@humamubarak6411]

Pinky ! When fibrinogen makes blood clots it separates from blood and remainder is called: A) plasma B) lymph C) serum D) puss

[@alanzhou6334]

The feeling when someone manages to talk about everything my teacher has been struggling for 2 weeks to get it into us in less than 10 minutes...

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I’m saying💯

[@mihlalifokazi9902]

Literally!!!

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Big factzzzz

[@arthurdavim5199]

Mine too

[@juliomontesnolasco2655]

about a year later and this comment couldn't be more true.

[@karii1194]

I love how people keep watching even though school has barely started and they're probably not assigned to us. You're so entertaining:D

[@karii1194]

@CaramelPotato oh that's cool I didnt know that

[@thatoneguy423]

Tbh

[@waffleisnice]

Wdym school has not start.. We already go to school like 1 months ago 🤡

[@Iliketurtles.1.]

@CaramelPotato in Philippines School Started In August 17 :P

[@daniellacalvetti._.2688]

My teacher shows us some of your videos and I love how you mixed science and animation

[@alinaarachnaphobic]

Notes: -Blood is red not blue -Blood maintains pH and temp -Transports hormones nutrients gasses -Made of plasma(liquid), cellular components (red,white blood cells & platelets) -arteries carry blood away from the heart -veins carry blood to the heart -capillaries deliver oxygen -heart: •r deoxygenated blood L oxygenated blood •atrium thin walls •ventricles thick •needs it's own blood supply •beats 100,000+ times daily •anatomic differences change blood pathway flow meaning oxygen rich/poor blood can be mixed causing complications

[@V91w]

Tysm thats will help with tomorrow exam

[@alexmills1592]

Thanks

[@alexmills1592]

@@V91w omg same

[@1111supercoolguy]

Thank you!!

[@sreevaghicharala5669]

chad

[@jaclynlockwood1234]

Omg this is so weird I am literally taking Anatomy 2 right now and I was just reading all about the heart today. I was just thinking today I wish amoeba sisters would upload a video on the heart and YOU DID. You have no idea how happy I am right now. I got an A in biology because of you ❤️❤️❤️

[@Kaylub-xb6lc]

It is summer vacation

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@@Kaylub-xb6lc Online homeworks/classes :P

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swiftie 👀

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@Jaclyn lockwood Well Done!

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I wish I would get A in tomorrow's biology exam😅

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You know what this is the best biology channel on youtube universally

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i definetly agree with the part "universally"

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I totally agree....

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I can’t believe we have access to such AMAZING videos for free!

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Right?! These are so much fun to watch!! ❤️

[@jeromegomez6514]

agree

[@rishabhgautam2723]

So true ❤️

[@katelynvalenzuela7787]

I’ve been having a tough time understanding how the blood moves through the heart but you explained it perfectly, thank you so much!

[@MAGGIET-ll4ue]

These drawings are incredible! Petunia you’re a genius! 4th comment, I suppose.

[@elizabethdillard3998]

ikr aka i know right

[@punusername3445]

I suggested this channel to my biology teacher, now he always use of this drawings in his slideshows

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This is the most underrated KZbin channel ever.. You guys deserve an Oscar Award for the Best Biology KZbin channel ever😩😩

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This is the only 'pamphlet' I would never throw away after getting it.

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LOL i thought yo said this is the only on you WOULD throw away

[@thatliquidthing1903]

I was absolutely *PUMPED* when I saw your new video! Also, the heart has two of my favorite words: aorta and ventricle!

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THe puns, the puns...

[@carlosvijasuarez1873]

I always recommend this channel to my students, is really helpful for them. Thanks so much for every job that you do.

[@doolan0543]

School doesn't start for me for another 2 weeks, but I am so addicted to your videos. Yes I am a nerd

[@highvalue1195]

Whoever made this deserves an award 🤩 thank you!!! This moves fast and efficient for my brain. Keeps me interested the whole video.

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This channel has come a long way.

[@audrey2800]

Oh no, tiktok suggested me this channel and I'm super surprised!! I love this channel so much, it's fun and helps me so much... please make more videos for us to study!!! Thank you so much, it's so helpful for me...... you guys are amazing

[@nasracabdilaahimohamed2707]

Me too

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Seriously, you both are God's gift to biology students.

[@johnmeeks2799]

How are they God's gift to students? When do they ever give him the glory for his magnificent creation? God isn't concerned about you learning about the body, he's concerned about you giving him glory for him creating the body

[@Jeff-jz6hu]

Why are there 5 dislikes when this is so educative? It took Petunia hard work and Pinky too

[@kiralexton5783]

The dislike is from people who hate science no matter what

[@NotAriieFluffie]

this video has been suggested by our teacher. this is one of the lucky educational channels that i like! wait why am I here again?

[@WDCallahan]

Also the A looks like it points up like an arrow and V points down.

[@palaksingh8940]

All concepts cleared❤️ Thankyou amoeba sisters Lots of love from India 🇮🇳💕

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True sisso amoeba sisters are a combination of both fun and knowledge 👍🏻😃

[@newchapter-mylife4584]

I love your videos. They are so clear and I can understand the video so well. Science is my favorite topic so I usually search for science videos to clear my doubts and I'm so glad I have come across Amoeba Sisters. Your videos explain in detail without giving the "Boringness" that usually shadows us all when we are learning hard and complicated topics in detail. These videos give a will to learn more and even makes us learn topics befor our teachers even introduce them to us! Thank You So much for making my love in science even stronger and for clearing my doubts. Thanks Again Amoeba Sisters!!!

[@chrystalzhou8274]

I just discovered this channel this summer. Why couldn't youtube have brought it to me earlier? It is a great channel, and even though I don't use this for school as often (school hasn't started), it teaches me SO much and is so fun to watch. The Amoeba Sisters are the BEST!

[@MA-rc2eo]

Thanks to my biology teacher for recommending this channel.

[@sheis.evedzi]

I am so glad I came across this. I have been so hooked on your videos. Thanks for making this simpler than what my teacher took 4 hours to teach. 😘

[@darcy4522]

One of the best videos explaining the blood flow. Thank you.

[@artimaginationforall50]

I love how you use your actual voice instead of some monotone middle aged man. It really adds some personality to your videos. Thank you. 😊👍

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So much clarity!! Summarized and yet detailed enough to get the concept! Gonna watch atleast more times over and make notes Thank u so much ❤️

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Thanks to you I'll be passing my biology exam tomorrow 😌

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i-

[@loui_im]

@@manbeenarandhawa7909 ...

[@mastikitrain2844]

Great video, mam. I'm in 10th grade (India) and we've got this chapter- "Life Processes" in Bio and Transportation (in humans and plants) is a major part of the chapter. And this video was such an amazing summarised version of this topic- Transportation in Humans.

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same ! I'm so glad this short video cleared up a lot of things !!!❤🎉

[@mastikitrain2844]

@@makhado6962 are you an Indian too?

[@makhado6962]

@@mastikitrain2844 no I'm South African , but I guess our education system is the same

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@@makhado6962 yeah, maybe.

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same bro...

[@sakshimhatre5849]

This is actually what we need, the schools are just not sometimes useful for not teaching us this way. We understand better when it's animated and for this, Amoeba Sisters is the best!

[@nashidragneel9307]

The way you explain make students and adults not to get bored. Thank you for your explanation

[@DeadInside-ry7wq]

0:29 0:51 bld 0:58 red 1:11 veins artery’s Colours 1:36 functions bld P t o 1:52 plasma 2:03 cells RBC wbc 2:17 2:23 hemog Red 2:35 de o 2:51 ox 2:59 artery away 3:07 veins 3:14 cap 3:27 right Deo Left ox A top V bottom 4:00 valves one way Back flow no 4:17 pathway Ivc Ra Tcv Rv Pul v Pul a Lungs Lungs Pul vein La Mv(Bicv) Lv Aor v Aorta 6:39 6:48 contraction relaxation 7:17 asd Septic defect Ra/la

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THANK YOUUUUUUUUUUUUUUUUUUUUUUU

[@jkot9551]

I'm having online school and today my teacher showed us this video and after the video ended, she asked "did y'all understand anything from this video? I guess no" & then she started explaining about this in her annoying voice I just left the meeting and im here again watching this video to understand better. I couldn't understand before cause of my teacher 's screen. I would like to thank you for this awesome content! Hope I do well in Biology 💕

[@Ryxeeeee121]

LoL the fact that u guys make us understand this in less than 10 mins and the fact that teachers struggle weeks and weeks of explaining this to us and getting nowhere shows how much u help us, thanks yall :D

[@Katorimina11]

Thanks to you, I go a +2 on my seatwork from a question the teacher asked us in what was the biggest arteries. I also got a perfect in my seatwork and quiz! Thank you for this great video, you explained it clearly! :)

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You guys are so cool you are the people that make me love science as much as i do keep up the good work and ill stay curious!!!

[@swap9649]

Jeez, this is probably better than the content my school offers me, and for free! Thank you so much for this video!

[@tttais._.teddytuff1694]

Thank you so much! 💗 I’m currently on the cardiovascular/circulatory unit of my online medicine course-in highschool since I have a passion for medicine-this elaborated on the circulatory process way much better! ✨I got a grip of interpretation really fast !!

[@jasleenkaur2328]

That iron man blood cell was actually really cute 😂❤️

[@LoFoSho]

I’m so lucky my teacher was a physician for years and did research and she is really great, but having pictures to look at really helps put what she says together! Ty! As for everyone that has bad teachers, I’m sorry. I’ve noticed that teachers seem to forget where they came from, and don’t realize that we are new to this and expect too much.

[@farhatsheikh09]

It's a very clear and simple explanation no complexity. I love it I was having doubts about blood pathway but it's clear now. Thanks to this video

[@user-vc5bu3ju1e]

i like how my teacher just straight up told us to watch this channel class instead of actually teaching

[@anvi5792]

Yay! Thanks you so much for this video! You guys are amazing and cool. Also Petunia, your drawings are amazing. My mum loves them. I hope you are doing well. Lots of love from India 🇮🇳🇮🇳

[@user-gk3bq8wu3q]

This channel is a life saver!

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Yayyyyyy!!! Amoeba Sisters helped me through AP1 and AP2, and now through Cardiopulmonary AP. THANK YOU!!!

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Omg thank you so much, i literally cried over my biology test and was going to not revise but thank god i came across this video , you really helped me understand this easily and your learning method is really easy to follow, amazing vid!!!!

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These videos are so helpful Thank you!

[@joeyward2990]

This video saved me on my exam. Thank you so much!!!

[@notgreg123]

Ah yes, the channel that our science teachers make us watch has managed to sneak into my recommended and now I'm going to watch these for an hour

[@HA-yc5bb]

I RECOMMENDED THIS VIDEO 2 YEARS AGO!!! I’m so happy... .... Just waiting on the Brain structure and function video!

[@myboy647]

This video was made 6 months ago...

[@topfinestthings2283]

I really appreciate my biology teacher for introducing this channel. sending virtual hugs

[@baljeet2107]

Unlike the usual and boring animations, this is quite informative! Keep up the good work!

[@sempeho2617]

Thank you very much I didn't understand my teacher when he was teaching the subject and it was very entertaining I hope u do more episodes your de best

[@Kari.415]

I was ready for the song 😢😂

[@rithvikasphoorthi]

This video helped me alot for my exam....I literally did not understand anything when I read my TB lesson but when I saw this I can Top my exam tmr. And I even shared it with my classmates to help them....this is literally the best video

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Thank you very much Amoeba Sisters. I am watching these videos and it is helping me preparing my High School Finals and my Medical College Entrance Exams.

[@c.a.v2000]

First 3 Minutes of the video: I already have 4 Pages filled with notes😂 Thx For all the Info!!!!

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dude thank you so much for this im not even on this subject in biology yet but i love watching your videos

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literally cant thankyou enough you have helped throughout my tough times and i was able to understand most of the contents through your videos.

[@dark_night3204]

This video is a life saver. I am literally writing an exam tomorrow and just found out that this topic is gonna be in it. You guys saved me so much time trying to study the basics of it. Thank you so much

[@gomatheeshwarm5716]

Great timing! I have a test tomorrow and I can't understand anything about the circulatory system properly! Besides biology, are you an expert in mind reading as well?😆 Edit: I got 56/60 on the test and I couldn't have done it without this video

[@AmoebaSisters]

Good luck on your test!! We love it when the timing works out like that! ≧◡≦

[@naomidavis1614]

anyone else doing this for school

[@irfokrk]

Me

[@user-du7yx9tw9y]

Sometimes yes

[@levender_berry]

Me 😭

[@Havish9999]

Nope, for fun

[@geetanjalirai7983]

I'm was always fond of studying cardio and this video has proved to be really apt. Thank you so much :)

[@athenemak5829]

a big thank you to amoeba sisters. u make anatomy and physiology so much easier to understand unlike uni lectures...

[@moonlightstarlight8450]

if anybody has a problem remembering which side is oxygenated and which side is deoxygenated there is a Mnemonic LORD (left oxygenated and right deoxygenated)

[@collinmoriah]

This. Is the. Best

[@GeneralKenobi01]

You guys made biology so easy! Thank you!

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Thank you Amoeba Sisters! There's this yearly science competition in my school district and usually a big section is biology. Couldn't get 1st without your videos! 👏🤩

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Absolutely LOVEEEE your videos! Hope you guys are doing well during these times! :-) I’m definitely going to be watching a bunch of your videos for my bio2 and human anatomy class this semester!

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Nobody asked

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@@anythingaboutanything2152 these people man..

[@smolcactusd3444]

this was EXACTLY what I needed for my exam on Friday. THANK YOU SO MUCH

[@mat-on-the-bathroom-floor]

The only way Biology seems to make sense to me is through these videos so you've gained a very VERY long term subscriber :D

[@karman5287]

This is the most interesting cardiology vid ever!!!!

[@amyrosita1]

this is my favorite channel to go to for science!

[@sandeepdalal1181]

Same

[@emilychavez8292]

Omg i so needed this right now. I’m going through a midterm tomorrow and i have to brush up on the circulatory system. Thanks amoeba sisters. You came just in the nick of time. I love your videos. Thanks for all the great study references. They are helping me lots. Ive gotten far because of you guys. Cause I’m studying to do surgical technology and with all of your references. Ive felt so confident in my test and have passed. Thanks for all the help you have given me. Love you tons, and petunia congrats on the new little amoeba (little rose).

[@AmoebaSisters]

Good luck on your midterm and thank you for the awesome encouragement! ≧◡≦

[@queenofpents3442]

So easy to understand yesss! You break it down where it finally makes sense to me and the drawings are just icing on the cake. Visuals really are the best for studying

[@gabym5546]

Im in my first yr of PA school (finished undergrad like 6-7 years ago) and needed a circulatory system refreher. This was such a great video!!!!!! thank you!!!

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2:05 normal people: normal introduction of cells weebs: pictures cells at work characters

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YESS YOU GOT ME THERE

[@michaelwarden2700]

So informative!

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to be honest people say that studying is boring and for nerds, this just changed that and this is genuinly entertaining for me as i am interested in this type of subject. Thanks for the video!

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you just saved my life,no actually I love this!!! I have been confused and clueless while studying but thanks to you I actually understand now 💞💞

hii

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Inferior vena cava: Your labels don't define me! Lmao, I love the animations and the little comments

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Amoeba sisters!! Pls do some biochem topics 🥺🥺❤️

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I'm so glad that the Amoeba Sisters are making new videos! Hooray!

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Honestly, 1000000% don't know what I would do without your videos to help me learn this stuff. You are wonderful wonderful people. Thank you.

[@byeeee1997]

firstly thank you for this video I understand a lot more on the circulatory system no offense to my teacher but you explain it much better :> also the drawings are incredible! I love the work put into EVERYTHING!

[@lama3273]

I have a biology test after 3 days and this explanation was really entertaining and also so useful! Thank you

[@elenapickering-polstra3043]

I'm literally a college student, my professor is sick and asked us to go over the lecure on our own, I couldn't understand what direction the blood flowed through the heart. Nothing in my college level class thought it would be important to tell me that the diagrams are flipped. Thanks, amoeba sisters.

[@Blue_3987]

I'm very lucky to have come across this channel

[@katieyu9374]

So excited for your new videos!!! I love the fun and creative ways you explain science concepts, thanks for the hard work!! ❤️

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I've never had fun AND learn at the same time :DD

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Just can't get over how adorable the drawings are and the best voiceover voice 😍

[@thesceincelaboratory]

I just wanted to say how incredible this 8 minute video is. I’ve never watched a video that can explain and teach this well. This video is simply incredible and I am very glad and lucky that I found this video before my exam.It is a literal life saver.Thankyouuusoooomuchhhh❤❤

[@GlassStunned]

Love how y’all explained this in 9 minutes while my teacher used 4 hours…

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you guys help me so much with bio! i'm in a new school and have a whole terms worth of work to catch up on :( i don't often say this but i love you guys, keep up the good work!

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I love you too, Good luck :>

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You know what, I love you so much. Thank you for these amazing videos. I'm actually about to start my finals for 9th grade in two weeks and I've been freaking out about biology. This helped me out so much. Not only is it entertaining, but it's also easy to understand. Thank you.

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I want to become some kind of microbiologist or virologist once i get older and its all thanks to you guys :) thank you

[@mathewthomas6694]

Pinkie: It almost makes you want to turn it into a song Petunia: Please don't do what I think you're about to do...