Lacteal Meaning: Definition, Examples, and Translations
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lacteal
[หlรฆkteษl ]
Definition
anatomy function
Lacteals are tiny lymphatic vessels located in the villi of the small intestine that are responsible for the absorption of dietary fats and fat-soluble vitamins from the intestinal tract. They play a crucial role in the digestive system by transporting these substances into the lymphatic system before they enter the bloodstream.
Synonyms
fat-absorbing vessel, lymphatic vessel.
Examples of usage
- Lacteals absorb fats from the digested food.
- The lacteal system helps in the transportation of vitamins.
- Each villus contains a lacteal for fat absorption.
Translations
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Origin of 'lacteal'
The term 'lacteal' originates from the Latin word 'lacteus,' which means 'milky,' derived from 'lac,' meaning 'milk.' This terminology is reflective of the appearance of the lymphatic fluid, which is milky in color due to the presence of fat globules after a fatty meal. The use of the word 'lacteal' in medical literature dates back to the early seventeenth century when anatomists began to better understand the lymphatic system's structure and function. Historically, these vessels were first described in detail by the Italian anatomist Marco Aurelio Severino in 1643, who observed and documented their role in nutrient absorption. Over time, the understanding of lacteals expanded, highlighting their importance not only in fat absorption but also in immune functions within the lymphatic system.