Life Process - 11 | Blood Circulatory System - Working of Heart | CBSE Class 10

CBSE Class 10 Science Chapter 6 - Life Process - Heart is a muscular organ, which beats 72 times per minute. Human heart has four chambered to keep oxygenated and deoxygenated blood separate. There is Right Atrium, Right Ventricle, Left Atrium and Left Ventricle. Atrium are responsible for receiving the blood and Ventricles pump out the blood.
Right Atrium - receives deoxygenated blood from body
Left Atrium - receives oxygenated blood from Lungs
Right Ventricle - pumps out deoxygenated blood to the lungs
Left Ventricle - pumps out oxygenated blood to the body.
Lets understand the working of Heart through this video.
Humans have Double Circulatory System as blood is circulated two times across the heart, first in deoxygenated form and second in oxygenated form.

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[apexvibezz]

who else watching this the day before an exam

[strikervais]

We all should get ginnius award for visiting each and every youtube channel before attending
(fun fact) : it only start at 24 hour before exam

[yahiamohamed]

Wow thank you so much, my mind was upside down, but now everything is in order!!😀😍

[sureshgundluru]

Really outstanding teaching simply incredible it's helped me a lot...thank you

[arshaqrazeen]

5:15 IN REPTILES CROCODILE IS AN EXCEPTION OF HAVING 3 CHAMBERS IT HAS 4. HOPE IT HELPS ;)

[maxdaksh]

My friend - Who is greatest ?
Me - The one who watches this type of video not before exams 😂😂

Anyway from my side ALL THE BEST and if you have more time than this is for you

The human heart is a remarkable organ responsible for pumping blood throughout the body, providing oxygen and nutrients to cells and removing waste products. Here are some key points about the human heart:

Anatomy: The heart is a muscular organ located slightly left of the center of the chest, between the lungs and behind the breastbone (sternum). It is roughly the size of a closed fist and weighs about 250 to 350 grams in adults. The heart is enclosed in a protective sac called the pericardium.

Chambers: The heart is divided into four chambers – two atria (upper chambers) and two ventricles (lower chambers). The right atrium receives deoxygenated blood from the body and pumps it into the right ventricle. The right ventricle then pumps the blood to the lungs for oxygenation. Oxygenated blood returns to the left atrium, which then pumps it into the left ventricle. The left ventricle is responsible for pumping oxygenated blood to the rest of the body.

Valves: The heart contains four valves that regulate blood flow and prevent backflow. The tricuspid valve separates the right atrium from the right ventricle, the pulmonary valve separates the right ventricle from the pulmonary artery, the mitral (or bicuspid) valve separates the left atrium from the left ventricle, and the aortic valve separates the left ventricle from the aorta.

Circulation: The heart is part of the circulatory system, which comprises two main circuits – the pulmonary circulation and the systemic circulation. Pulmonary circulation is responsible for carrying deoxygenated blood from the heart to the lungs and returning oxygenated blood to the heart. Systemic circulation carries oxygenated blood from the heart to the rest of the body and returns deoxygenated blood to the heart.

Electrical system: The heart has its own electrical system that controls the heartbeat. The sinoatrial (SA) node, located in the right atrium, acts as the heart's natural pacemaker, initiating electrical impulses that cause the heart muscles to contract. The electrical signals then travel through the atria to the atrioventricular (AV) node, which acts as a gatekeeper, delaying the signal before transmitting it to the ventricles. This delay ensures proper coordination between atrial and ventricular contractions.

Heartbeat and cardiac cycle: The heartbeat is the rhythmic contraction and relaxation of the heart muscles. A complete cardiac cycle consists of two phases: systole (contraction) and diastole (relaxation). During systole, the heart contracts, pumping blood into the arteries. During diastole, the heart relaxes and fills with blood from the veins.

Heart rate and rhythm: The normal resting heart rate for adults typically ranges from 60 to 100 beats per minute. The rhythm of the heartbeat is regulated by the electrical signals produced by the heart's natural pacemaker, but it can be influenced by factors such as emotions, physical activity, and hormonal changes.

Blood supply to the heart: The heart itself needs a continuous supply of oxygenated blood to function properly. The coronary arteries are responsible for providing oxygen and nutrients to the heart muscles. In some cases, blockages in these arteries can lead to coronary heart disease or a heart attack.

Heart health: Maintaining a healthy lifestyle through regular exercise, a balanced diet, managing stress, avoiding smoking, and controlling risk factors like high blood pressure and cholesterol levels are crucial for heart health. Regular medical checkups can help identify and address potential heart issues early.

Heart diseases: Various conditions can affect the heart, including coronary artery disease, heart failure, arrhythmias, and valve disorders. These conditions can significantly impact heart function and require medical management and treatment.

Remember, while I can provide general information, it is essential to consult a qualified healthcare professional for personalized advice and treatment regarding specific heart-related concerns.

[miansoban]

Each and every word was clear
Absolutely understandable
Thank u so much mam
It helps alot

[Sabita_]

The best teaching ever...wasted my time watching other videos of 30 minutes but u have incredibly explained it.

[savitachamoli]

I am here for first time I liked these classes, and think these class are to much helpful for revision

[epicflamebuster]

Who else is watching this video before exams😂😁

[vedavratpaul]

arteries has thick walls 4:00
ventricles have thin walls

[ManjunathaReddyMR]

Thank you so much mam it is very useful for my 10th board exam

[illusiongaming]

Thanks a lot mam... 🥺🥺i dont know how can i thank you 🌹❤🙏... Fantastic teaching.. After a lots of confusion and now I m cleared... Now only I came to know how the heart works without any confusion 😵🥺🥺🥺

[sakshinegi]

Hello mam . This video is wonderful . Thanks for this useful information .

[tanushka]

Thank you, have explained so well! It's amazing, human body is fantabulous and so the explanation! Made it easy!

[priyarajpurohit]

I had watched many video regarding this topic but I m not satisfied with that but now my every doubts are cleared thnx for this, very helpful to me

[WTF-hjtb]

Legend are watching video before the exam😘😘

[shreyashlokhande]

Hello ma'am! I am a new student for you.. when you were giving the difference of arteries and veins I didn't got the very first point... I will be glad if you explain that to me..
Thank u!

[annapurnab]

Tmrw is my science exam and finally this final topic is clear 😌

[jayasandipwaghadkawaghadka]

Best video ever to explian heart in short time