What are lymphatic capillaries also known as?

Lymphatic capillaries are known as lacteals, which are specialized structures found in the intestinal walls. They play a crucial role in the absorption of dietary fats and fat-soluble vitamins from the intestine, transporting these substances into the lymphatic system.

Lacteals are distinct from general lymphatic capillaries, as they specifically absorb chyle—this is the milky bodily fluid that results from the emulsification of fats during digestion. This unique role in nutrient absorption sets them apart, defining them as a particular type of lymphatic capillary responsible for the uptake of fats and fat-soluble nutrients.

The other terms listed refer to different structures or concepts within the lymphatic and circulatory systems. Chyle vessels are a broader term that could refer to lacteals, but they are not the commonly used name. Thoracic ducts refer to the main lymphatic vessel that drains lymph into the bloodstream but do not directly identify lymphatic capillaries. Veins are part of the circulatory system and have a different function as they transport deoxygenated blood back to the heart.