Capillaries (Medical Definition) | Quick Explainer Video

What are capillaries? What is their function in the human body? This video covers the medical definition and provides a brief overview of this topic.

➡️ Capillaries
Capillaries are small blood vessels that are only 5-10 μm in diameter. Although small in size, capillaries play an important role in the body as they are responsible for exchanging blood and nutrients between the body tissues and the bloodstream. Capillaries form a connection between the arterioles and venules. Since the walls of capillaries are so thin, it allows for easy diffusion of oxygen, carbon dioxide, nutrients, and waste products.

➡️ Diffusion
Diffusion is the process by which molecules move from an area of high concentration to an area of low concentration. In the case of oxygen and carbon dioxide, the blood in the capillaries is typically more concentrated with these gases than the surrounding tissues. The small size of the capillaries also allows for a large surface area in which diffusion can occur. This is important as it allows the body to exchange oxygen and carbon dioxide at a high rate, ensuring that the tissues receive the oxygen they need and that waste products are removed efficiently.

➡️ Location
Capillaries are found throughout the body and are especially abundant in areas where oxygen and nutrient exchange is important, such as the lungs, gut, and kidneys. They are also found in the brain, where they play an important role in maintaining a constant supply of blood and nutrients in that area as well. Capillaries are an important part of the body's circulatory system and play a vital role in exchanging blood and nutrients between body tissues and the bloodstream.

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🚑MEDICAL DISCLAIMER
This content is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Please consult with a physician with any questions that you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you watch in this video. We strive for 100% accuracy, but errors may occur, and medications, protocols, and treatment methods may change over time.

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⏰TIMESTAMPS
0:00 - Intro
0:26 - Capillaries
0:58 - Diffusion

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