Understanding Your Heart Beat
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- Опубликовано: 19 окт 2023
- MEDICAL ANIMATION TRANSCRIPT: The cardiac cycle is the sequence of contraction and relaxation of the heart chambers during a single heartbeat. The contraction of the heart chambers is called systole. And relaxation of the heart chambers is called diastole. The cycle begins with both the atria and ventricles in diastole. Both atrioventricular valves are open while the pulmonary and aortic semilunar valves are closed. Blood flows into the right atrium through the superior and inferior vena cava. Blood flows from the lungs into the left atrium through the pulmonary veins. Then blood moves from both atria into the ventricles through the open atrial ventricular valves. During atrial systole, the atria contract and force any remaining atrial blood into the ventricles. The ventricles are still in diastole, allowing them to expand and completely fill with blood. During ventricular systole, the ventricles contract, the atrioventricular valves close, preventing backflow or regurgitation of blood into the atria, the pulmonary semilunar valve opens, and the right ventricle expels blood into the pulmonary arteries to the lungs. Likewise, the aortic semilunar valve opens and the left ventricle expels blood into the aorta and out to the rest of the body. After ventricular systole, the cardiac cycle begins again as both the atria and ventricles enter diastole to allow the heart to fill with blood. Normally, this cycle repeats 60 to 100 times a minute. The right-side of the heart produces pulmonary circulation. This is the movement of deoxygenated blood from the body through the right atrium and ventricle, out through the pulmonary artery and to the lungs. Blood oxygenated in the lungs' alveoli returns to the heart through the pulmonary veins. The left side of the heart produces systemic circulation. This is the movement of oxygenated blood returning from the lungs to the left atrium and ventricle and out through the aorta to be distributed to the rest of the body.
#HeartBeat #CardiacCycle #BloodFlow
ANM11018
Amazing, scary, and beautiful. How all our organs work is truly a miracle.
وفي أنفسكم أفلا تبصرون
Especially the heart
Electrical signals start in a group of cells at the top of the heart called the sinus node. The signals tell the heart to beat. The sinus node also is called the heart's natural pacemaker. It can become weak as a person gets older.
Awesome, the content is very useful and we have gained knowledge. I appreciate the effort that has put into the production of this video.
Just last night I was watching a video on the evolution of the heart.
Great timing!
The more i know about the body..... The more i know that this life is only once. Take care of your heart....😊
True ❤
Excellent video!
Phenomenal work
Wow! I do this every day!
Informative Video. Easy to understand how to blood supply in human body . lots of love
Thanks for recap
Amazing work
Good audio and video animation
Loved It Nucleus Medical Media ❤
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Nobody cares. Allah o akbar.
@@Anonymous-mh5slwell cared enough to comment.
@@Watermellon-cat368Shut up, delusional.
Yes, Jesus loves us
😀
Cool!
Very nice
Wow impresionante 🥰
My heart will go on ❤
I need more videos on this topic
Incredible how the heart works subhanallah 💗
👌🙏 nice
❤
it kinda make sense
Why are some comments turned off for some videos and others are on?
❤👍
Try to create heart alive with natural clay mix
Why don't you have an app?
Set it to 1.25x playback speed you're welcome.
=====thank you
Good morning everyone 🇮🇳✅💯👈🤝🤲🙏🏿👍✌️👏🏿👌
If Jesus gave you health today shout hallelujah!
Thank you to our lord and savior Jesus Christ 🙏🏾
Unbelievers are assaulting people by magic, they are not Muslims.
They are begin assaulting
❤