Distal convoluted tubule
Distal Convoluted Tubule
The Distal Convoluted Tubule (DCT) (pronounced: dis-tal con-vol-uted too-bule) is a portion of the nephron in the kidney that plays a crucial role in the reabsorption of ions, water, and other substances. The term "distal" refers to its position further down the nephron's sequence, and "convoluted" describes its twisted structure.
Etymology
The term "Distal Convoluted Tubule" originates from Latin. "Distal" comes from "distare," meaning "to stand apart," referring to its position in the nephron. "Convoluted" is derived from "convolvere," meaning "to roll together," describing the tubule's twisted structure.
Function
The primary function of the Distal Convoluted Tubule is to absorb ions and water from the urine to maintain the body's electrolyte balance and prevent dehydration. It also plays a role in regulating blood pressure by controlling the volume of water excreted from the body.
Related Terms
- Nephron: The functional unit of the kidney, consisting of the glomerulus, proximal convoluted tubule, loop of Henle, and distal convoluted tubule.
- Proximal Convoluted Tubule: The first segment of a nephron, which reabsorbs water and solutes from the filtrate and secretes substances into it.
- Loop of Henle: The U-shaped part of the nephron that plays a key role in concentrating the urine and conserving water.
- Glomerulus: A network of tiny blood vessels in the kidney where the filtration of blood takes place.
See Also
External links
- Medical encyclopedia article on Distal convoluted tubule
- Wikipedia's article - Distal convoluted tubule
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