Dermatome

Dermatomes are areas of skin that are formed as a result of the division of the skin into separate layers during the formation of the embryo. They represent the mesenchymal rudiments of the connective tissue bases of the skin.

Dermatomes play an important role in the development of the skin and its functions. They determine the shape and location of the skin, and also participate in the formation of other organs and tissues. For example, the dermatome on the face determines the shape of the nose, lips, ears and other parts of the face.

To obtain skin flaps of the required shape and size, a special tool is used - a dermatome. It is a knife with a blade that is used to cut the skin in a specific place. The resulting skin flap can then be used for wound closure, skin grafting, or other medical purposes.

Thus, dermatomes and dermatomes are important areas of the skin that participate in its formation and development. They can also be used in medicine for skin grafts and other medical procedures.

Dermatomes are important in skin development, and their pathology can lead to a variety of diseases. Knowledge of the term "dermatomes" and the structure of its origin allows you to deeply understand the meaning of these concepts and their relationship with the skin.

The dermatome is the dorsolateral portion of the somite - the dorsal part of the germ layers, the outer layer of each embryonic segment, which forms the muscle hair and skin. All dermatomes (except I and III) accompany the splitting of the lower fibrocranial membrane of the somites to the I segment. During embryogenesis, dermatomes occupy a position at the somite level above and around a group of hypodermal keratinocytes (glandulae sebacea). These layers recede into the anterior end of the embryo, after the appearance of the notochord, when defining the dorsal and ventral sides of the body, creating the dermatomal fold: the upper lateral fold of the head, shoulders and chest in an embryological section. Each dermatome arises from several accumulations of mesenchymal cells and connective tissue, which then migrate along the abdominal wall. Prenatally, these dermatomes are in the stage of epithelial-mesenchymal shift, preventing the connection of the endoderm of the somitic region with the periphery