Which organ of the human body does not receive oxygen through the blood? Detailed answer

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Which organ of the human body does not receive oxygen through the blood? Detailed answer

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Which organ of the human body does not receive oxygen through the blood?

The cornea of the eye is the only part of the human body that does not have an oxygen supply through the circulatory system, because the cornea should be as transparent as possible. Instead, her cells get the oxygen dissolved in her tears straight from the air.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

How are arteries different from veins?

No urban transportation system can match the efficiency of the body's circulatory system. If you imagine two piping systems, a large one and a small one, that meet in a pumping station, you will get an idea of the circulatory system. A smaller system of pipes runs from the heart to the lungs and back. Large - goes from the heart to other various organs. These tubes are called arteries, veins and capillaries.

Arteries are the vessels that carry blood away from the heart. Veins return blood to the heart. Generally speaking, arteries carry pure blood to various organs, and veins return blood saturated with various waste products. Capillaries are blood vessels for moving blood from arteries to veins. The pumping station is the heart. The arteries are located deep in the tissues, with the exception of the wrist, instep, temple, and neck. In any of these places, a pulse is felt, by which the doctor can get an idea of \uXNUMXb\uXNUMXbthe condition of the arteries.

The largest arteries have valves where they leave the heart. These vessels are made up of a large number of elastic muscles that can stretch and contract. Arterial blood has a bright red color and moves through the arteries in jerks. Veins are located closer to the surface of the skin, the blood in them is darker and flows more evenly. They have valves at certain distances along their entire length.

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