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Short Tricks: Body Fluids and Circulation Video Lecture | Biology Class 11 - NEET

FAQs on Short Tricks: Body Fluids and Circulation Video Lecture - Biology Class 11 - NEET

1. What are the different types of body fluids involved in circulation?

Ans. The different types of body fluids involved in circulation are blood, lymph, and interstitial fluid. Blood circulates within blood vessels, transporting oxygen, nutrients, hormones, and waste products. Lymph is a clear fluid that circulates in lymphatic vessels, helping to remove waste and toxins from tissues. Interstitial fluid is the fluid that surrounds and bathes the cells in the body.

2. How does blood circulation occur in the human body?

Ans. Blood circulation in the human body occurs through a network of blood vessels. The heart pumps oxygen-rich blood from the left side of the heart into the arteries, which carry it to various organs and tissues. In the capillaries, oxygen and nutrients are exchanged with the surrounding cells, and carbon dioxide and waste products are picked up. The deoxygenated blood then returns to the heart through veins, where it gets oxygenated again in the lungs before the cycle repeats.

3. What is the role of lymph in the circulatory system?

Ans. Lymph plays a crucial role in the circulatory system by helping to remove waste, toxins, and excess fluid from tissues. It circulates in lymphatic vessels, which are similar to blood vessels but form a separate network. Lymph collects waste products from tissues and carries them to lymph nodes, where they are filtered and destroyed by immune cells. The purified lymph is then returned back to the bloodstream.

4. How is blood pressure regulated in the body?

Ans. Blood pressure is regulated in the body through a complex system involving various mechanisms. One of the key regulators is the autonomic nervous system, which controls the diameter of blood vessels and the heart rate. When blood pressure is too high, the blood vessels constrict, and the heart rate decreases, reducing the pressure. Conversely, when blood pressure is too low, the blood vessels dilate, and the heart rate increases to raise the pressure.

5. What is the purpose of interstitial fluid?

Ans. Interstitial fluid serves several purposes in the body. It provides a medium for the exchange of nutrients, oxygen, and waste products between the blood vessels and surrounding cells. It also helps maintain the balance of electrolytes and pH levels in the tissues. Additionally, interstitial fluid acts as a cushion, protecting cells from mechanical stress and facilitating the movement of immune cells to fight infections.

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Sep 27, 2025 Last updated

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	Biology Class 11 150 videos\|398 docs\|136 tests

Biology Class 11

150 videos|398 docs|136 tests

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