Blood supply
Blood Supply
Blood supply (/blʌd sʌˈplaɪ/) refers to the delivery of oxygenated blood to the tissues and organs of the body through the circulatory system. The blood supply is crucial for the survival and function of all cells in the body.
Etymology
The term "blood supply" is derived from the Old English blōd for "blood" and the Middle English supplyen for "to make available."
Anatomy of Blood Supply
The heart is the central organ responsible for pumping blood throughout the body. The arteries carry oxygenated blood away from the heart to the body's tissues and organs. The veins return deoxygenated blood back to the heart. The smallest blood vessels, known as capillaries, connect the arteries and veins and facilitate the exchange of oxygen, nutrients, and waste materials between the blood and the body's cells.
Related Terms
- Circulatory system: The body's network of blood vessels, including the heart, arteries, veins, and capillaries.
- Oxygenated blood: Blood that has been enriched with oxygen in the lungs and is ready to be delivered to the body's cells.
- Deoxygenated blood: Blood that has delivered its oxygen to the body's cells and is returning to the heart to be re-oxygenated.
- Hemodynamics: The study of blood flow or the circulation.
- Vasoconstriction: The narrowing of blood vessels, which decreases blood flow.
- Vasodilation: The widening of blood vessels, which increases blood flow.
External links
- Medical encyclopedia article on Blood supply
- Wikipedia's article - Blood supply
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