Sulcus matricis unguis is a term used in anatomy to refer to the groove or furrow found at the base of the nail bed. The phonetic transcription for this term is /ˈsʌlkəs məˈtrɪs ˈʌŋɡwɪs/. The "s" is pronounced as /s/, the "u" as /ʌ/, the "l" as /l/, and the "k" as /k/. The "a" is pronounced as /ə/, the "t" as /t/, and the "r" as /r/. The "i" is pronounced as /ɪ/, and the "c" as /s/. Finally, the "m" is pronounced as /m/ and the "n" as /n/, while "g" is pronounced as /ɡ/ and "w"
Sulcus matricis unguis, also known as the nail matrix groove, is a term used in anatomy that refers to a small groove or furrow located at the proximal end of the nail bed. It denotes the area where the nail plate is formed and originates from the deeper layers of the epidermis known as the nail matrix.
The nail matrix is a specialized structure found underneath the nail and plays a crucial role in the growth and development of the nail plate. It consists of a highly vascularized bed of tissue responsible for producing the cells that make up the nail plate. The sulcus matricis unguis acts as a protective indentation within this nail bed.
The groove provides an anchoring point for the nail as it grows and serves to guide the nail plate during its development. It is also in this region that the cuticle, or eponychium, attaches to the nail plate, providing further protection against infection and damage. Additionally, the sulcus matricis unguis aids in the adhesion of the nail plate to the underlying structures of the finger or toe.
Overall, the sulcus matricis unguis is a significant anatomical feature that contributes to the growth, development, and overall structural integrity of the nail. By providing a specialized niche for the creation of the nail plate, it ensures the proper formation and function of the nail, safeguarding the delicate structures beneath.
The cutaneous furrow in which the root and posterior part of the lateral border of the nail are situated.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.