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Human Heart, value- Body Fluids and circulation, Biology, Class 11 Video Lecture

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FAQs on Human Heart, value- Body Fluids and circulation, Biology, Class 11 Video Lecture

1. What is the main function of the human heart?
Ans. The main function of the human heart is to pump oxygen-rich blood to all parts of the body. It acts as a muscular pump that ensures the circulation of blood throughout the circulatory system.
2. How does the human heart receive oxygen and nutrients?
Ans. The human heart receives oxygen and nutrients through a network of blood vessels called coronary arteries. These arteries supply blood to the heart muscle, allowing it to function properly and meet its own metabolic needs.
3. How does the human heart maintain a constant supply of oxygen-rich blood?
Ans. The human heart maintains a constant supply of oxygen-rich blood through a process called circulation. When the heart contracts, it pumps oxygenated blood from the lungs into the systemic circulation, delivering it to all body tissues. Simultaneously, deoxygenated blood is returned to the heart and sent to the lungs for oxygenation.
4. What are body fluids, and why are they essential for the human body?
Ans. Body fluids refer to the various liquids found within the human body, including blood, lymph, cerebrospinal fluid, and interstitial fluid. These fluids play crucial roles in maintaining homeostasis, transporting nutrients, removing waste products, regulating body temperature, and supporting various physiological functions.
5. How does the human circulatory system work?
Ans. The human circulatory system consists of the heart, blood vessels, and blood. The heart pumps oxygenated blood from the lungs to the body tissues through arteries. In the capillaries, exchange of oxygen, nutrients, and waste products occurs. Deoxygenated blood is then collected by veins and returned to the heart, where it is pumped to the lungs for oxygenation. This continuous cycle ensures the circulation of blood throughout the body.
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