Heart ka pumping action
Transcript
Dil kaise blood ko pump karta hai? Aaj samjhenge!
Dil ek muscular organ hai jo chest ke beech mein hota hai, fist ke size ka.
Dil ke char chamber hote hain: do atria upar aur do ventricles neeche.
Right atrium ko deoxygenated blood aata hai puri body se. Yeh blood right ventricle mein jaata hai, phir lungs ko pump hota hai.
- Deoxygenated = oxygen kam
Lungs mein oxygen milta hai, phir oxygenated blood left atrium ko aata hai.
Left atrium se blood left ventricle mein jaata hai.
- Left = oxygenated blood
Left ventricle sabse powerful chamber hai, puri body ko blood pump karta hai. Blood ko ek direction mein hi jaana chahiye, toh valves hote hain.
Tricuspid valve right side mein aur mitral valve left side mein hote hain.
Jab ventricles contract hote hain, valves khul jaate hain aur blood bahar nikalta hai.
Jab ventricles relax hote hain, valves band ho jaate hain aur blood wapas nahi aata.
Ek heartbeat mein: atria contract, phir ventricles contract, phir sab relax.
Example: ek minute mein dil 70 baar pump karta hai, 5 liters blood puri body mein.
- Har minute 5 liters!
70 \text{ beats/min} \times 5 \text{ L} = 350 \text{ L/hour}Quiz: Right ventricle ka blood kahan jaata hai? Toh dil ek powerful pump hai jo 24/7 blood ko body mein circulation karta hai!
Quick quiz
Q1. Right ventricle ka blood kahan jaata hai?
Right ventricle lungs ko blood pump karta hai oxygen lene ke liye.
