Epineural

Epineural (from ancient Greek ἐπί - on, above and νεῦρον - nerve) is a term denoting structures or processes originating from or located on the vertebral arch.

The vertebral arch is the part of the vertebra that extends from its body. It encloses the spinal canal, protecting the spinal cord. The vertebral arch consists of paired processes - the transverse and articular processes, as well as the unpaired spinous process.

Thus, epineural refers to structures that originate from or are located on the vertebral arch. These can be nerve fibers, blood vessels, ligaments and other anatomical formations. For example, the epineural nerve branches are nerves that innervate the muscles and skin that arise directly from the spinal nerves at the points where they exit the spinal canal between the vertebral arches.

Epineural, derived from the Latin epi- (over) and nervus (nerve), means “coming from the arch of a vertebra.” The term refers to an anatomical region located on the vertebral arches and can be used to describe various structures associated with this region.

The epineural layer is a thin membrane that covers the vertebral arch and protects the spinal cord and its vessels. This layer is composed of several layers of cells, including endothelial cells that provide barrier function, as well as glial cells such as astrocytes and Schwann cells.

The epineural layer also contains nerve endings that transmit sensory information from the skin and muscles to the spinal cord. In addition, this layer contains blood vessels that supply the spinal nerves and spinal tissues.

Epineural structures can be involved in various diseases, such as radiculitis, herniated disc, osteochondrosis and others. They can also be used to diagnose and treat these diseases.

Thus, epineural is a term that describes an anatomical region located on the arches of vertebrates and which is important to the nervous system and spinal cord.

Epineural lining (epi-nervalis) is a type of perineural innervation (perineuralis), while perineural spaces are not quite suitable to describe the perineural membrane itself, which surrounds nerve endings outside the perineural spaces and exists around nerve endings in tissues that do not contain any fluid , no pulpous fibers. "Epi" in Greek means "above" or "above", so the term refers to