The correct spelling of the word "capillary vein" is /ˈkæpɪlɛri veɪn/. The word is derived from the Latin word "capillaris," which means "of the hair," and "vena," which means "vein." IPA phonetic transcription breaks down the sounds in the word to make it easier to spell and understand. The "c" is pronounced as a hard "k," while "p" is pronounced as "p." The "i" sounds are short and are followed by "l" and "ɛ." The "a" sounds in "vein" are pronounced as a short "e."
A capillary vein refers to a tiny blood vessel that plays a crucial role in the circulatory system. This type of vein is part of the microcirculation system, which is responsible for transporting blood between the arterioles and venules. Capillary veins are extremely narrow and have a diameter ranging from 5μm to 10μm. They are found throughout the body, including in tissues, organs, and muscles.
Capillary veins form a network within the body, connecting arteries and veins, allowing for the exchange of nutrients, gases, and waste products between the bloodstream and surrounding tissues. Unlike arteries, capillary veins have thin and delicate walls, consisting of a single layer of endothelial cells. This structure facilitates the diffusion of substances such as oxygen, carbon dioxide, hormones, and nutrients.
Moreover, capillary veins allow for the removal of waste materials generated by cellular metabolism. As blood flows through these vessels, the exchange of molecules between the blood and body tissues occurs through a process called diffusion. Through this system, oxygen and nutrients pass from capillary veins into tissues, while carbon dioxide and waste products move in the opposite direction, entering the bloodstream to be eventually eliminated from the body.
In summary, capillary veins are tiny blood vessels that connect arteries and larger veins, enabling the exchange of substances between the bloodstream and the body's tissues. They serve a vital role in maintaining overall homeostasis by facilitating the transportation of oxygen, nutrients, and waste products throughout the body.
A venous radical or venule commencing from the capillaries.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The term "capillary vein" consists of two main components: "capillary" and "vein".
The word "capillary" comes from the Latin word "capillaris", which means "of hair" or "hair-like". This is derived from the Latin word "capillus", meaning "hair". The term "capillary" was originally used to describe the small blood vessels in the body that were thought to be as thin as a hair.
The word "vein" has its origins in the Latin word "vena", which refers to a blood vessel that carries blood toward the heart. It can be traced back to the Proto-Indo-European root "wēnā" or "ūenā", which means "to flow". This root is also seen in words like "venous" and "ventricle".