ELASTICA INTERNA Meaning and
Definition
-
Elastica interna is a Latin term used in medicine to refer to the internal elastic lamina. The term is used primarily in the context of blood vessels and arteries. The internal elastic lamina is a layer of elastic fibers located within the tunica intima, which is the innermost layer of the blood vessel wall.
The elastica interna is found in larger arteries and functions as a supportive structure that provides flexibility and elasticity to the blood vessel. It consists of a thin layer of elastic fibers that run perpendicular to the vessel wall, forming a distinct band. These elastic fibers allow the artery to stretch and recoil in response to changes in blood pressure, contributing to the maintenance of normal blood flow.
In addition to its mechanical properties, the elastica interna also aids in regulating blood flow through the arteries. It contributes to the barrier function of the tunica intima by preventing the diffusion of substances between the blood and surrounding tissues.
As a crucial component of the artery wall, the elastica interna plays a vital role in maintaining arterial function and health. Pathological changes or damage to this structure can lead to the development of arterial diseases, such as atherosclerosis, which can have significant implications for cardiovascular health.
Etymology of ELASTICA INTERNA
The term "elastica interna" is derived from Latin and consists of two components:
1. Elastica: This word comes from the Latin noun "elastica", which means "elastic". It is derived from the Greek word "elastikós", meaning "to set in motion, to send forth, to press together".
2. Interna: This word is the feminine form of the Latin adjective "internus", which means "internal" or "inner".
Therefore, "elastica interna" is a Latin term used to describe the internal elastic layer, typically in reference to blood vessels.
