Uploaded August 2026 | Updated September 2026, 2 weeks ago

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khanacademy.org/science/telangana-class-10-biologyin?lang=en

Every single second, litres of fluid leak out of your blood
vessels into your tissue. If it didn’t get collected, your body
would swell up like a balloon within hours.

So, how does your body drain this excess fluid? In this video we learn about a massive, silent drainage system running through your body
right now called the lymphatic system.

Watch the video to also learn how the blood becomes lymph and how it
moves without being pumped?

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now!

Timestamps:
00:00 - Introduction_why do my feet swell after a long journey?
00:36 - Circulatory system
00:53 - What happens to blood in the capillaries?
01:37 - What is the lymphatic system?
02:09 - Lymph
02:26 - Blood Vs lymph
03:14 - Blood clot
03:33 - What makes the lymph flow?
04:11 - The feet swell due to lymph stagnation
04:32 - Lymphatic vessels & their valves

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