The word "areolar tissue" refers to a type of connective tissue that is found in various parts of the body, including the skin and organs. The spelling of this word follows the International Phonetic Alphabet (IPA) standard, with the emphasis on the second syllable, which is "ree". The "a" in the first syllable is pronounced as in "apple", while the "e" in the second syllable sounds like "ea" in "tea". The final syllable, "lar", is pronounced with a schwa sound, similar to the "u" in "but".
Areolar tissue is a type of connective tissue found in the body that is composed of a loose arrangement of cells and fibers within a gel-like matrix. This tissue serves as a supportive framework for organs, providing strength, elasticity, and flexibility, while also allowing for easy diffusion of nutrients, gases, and wastes.
The main components of areolar tissue include fibroblasts, which are responsible for producing and maintaining the extracellular matrix, as well as collagen and elastin fibers. Collagen fibers give the tissue its strength and resistance to tension, while elastin fibers provide elasticity and the ability to recoil after being stretched.
Areolar tissue is widely distributed throughout the body, forming a layer beneath the skin, surrounding blood vessels, nerves, and organs, and filling the spaces between muscles and within the walls of organs. It acts as a cushion, protecting delicate structures and helping to maintain their shape and position.
This type of tissue is highly vascularized, meaning it has a rich blood supply, allowing for efficient transport of nutrients, oxygen, and waste products. It also contains various immune cells, such as macrophages and mast cells, which play a role in tissue defense and inflammation.
Overall, areolar tissue plays a crucial role in supporting and connecting different organs and tissues in the body, ensuring their proper functioning and maintaining the overall structural integrity.
• Loose connective tissue containing many interspaces.
• The type of connective t. consisting of wavy bundles of white fibrous tissue mingled with straight threads of elastic tissue, contained in a ground substance of much in which are imbedded also the connective-tissue cells; these are flattened lamellar cells, granule cells, Waldeyer's plasma cells, and wandering cells.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "areolar" is derived from the Latin word "areola" which means "little area". It refers to the small spaces or cavities found in this type of tissue. The term was first used by the German pathologist, Rudolf Virchow, in the mid-19th century to describe the loose network of connective tissue with small spaces or areolae that allows for the diffusion of fluids and other substances.