Thoracic duct
Thoracic Duct
The Thoracic Duct (tho-RAS-ik DUKT) is the largest lymphatic vessel in the human body. It is a crucial part of the lymphatic system, which is responsible for maintaining the body's fluid balance and defending against infections.
Etymology
The term "Thoracic" comes from the Greek word "thorax," meaning "chest," and "duct" is derived from the Latin "ductus," meaning "leading." The Thoracic Duct is so named because it is a large duct located in the thoracic (chest) region of the body.
Function
The Thoracic Duct collects lymph from the majority of the body, excluding the right upper limb, right side of the thorax, and right halves of the head and neck. This lymph is then returned to the bloodstream near the neck. The duct plays a vital role in the immune response by transporting lymphocytes, a type of white blood cell, to the bloodstream.
Related Terms
- Lymphatic system: The network of tissues and organs that help rid the body of toxins, waste, and other unwanted materials.
- Lymph: A clear fluid that travels through the lymphatic system and carries cells that help fight infections and diseases.
- Lymphocytes: A type of white blood cell that is part of the immune system.
See Also
External links
- Medical encyclopedia article on Thoracic duct
- Wikipedia's article - Thoracic duct
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