Dictionary > Nail matrix

Nail matrix

Definition
noun
The area consisting of mitotically active layer of cells at the base of the fingernail or the toenail and is responsible for the formation of the nail plate
Supplement
The nail matrix is made up of a layer of cells situated at the base of the fingernail or the toenail. It is found at the posterior half of the nail bed, and beneath the proximal nail fold. The skin cells in the nail matrix are mitotically active and are regarded as the most rapidly dividing skin cells. They grow four times faster than toenails. The growth rate is about 3 mm a month. Thus, the nail matrix is regarded as the nail-forming tissue.1 It gives rise to the nail plate.2
Accordingly, the nail matrix has three main parts: (1) the dorsal region, (2) the intermediate region, and (3) the ventral region. The dorsal region gives rise to a large part of the superficial layers whereas the intermediate region forms the deeper layers of the nail plate. The distal layers are formed by the formative layers of the nail matrix at the ventral region.3
Synonym(s):

  • onychostroma

See also:

Related term(s):

  • Groove of nail matrix

Reference(s):

1 Zuber, T. & Mayeaux, E. (2004). Atlas of primary care procedures. Philadelphia: Lippincott Williams & Wilkins.

2 Venkataram, M. (2012). ACS(I) textbook on cutaneous and aesthetic surgery. New Delhi: Jaypee Brothers Medical Publishers.

3 Sacchidanand, S. & Savitha, A. (2013). Nail and its disorders. New Delhi: Jaypee Brothers Medical Publishers (P) LTD.


You will also like...

Control of body movement
Control of Body Movement

Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..

Population Regulation in an Ecosystem
Population Regulation in an Ecosystem

With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..

Human perception in action
Human Perception – Neurology

This tutorial investigates perception as two people can interpret the same thing differently. Know more about human perc..

Plant Auxins
Plant Auxins – Phototropism & Geotropism

Plants produce hormones to regulate their growth. Auxins, for instance, influence plant growth. Know the role of auxin i..

New Zealand - Biodiversity fauna
New Zealand’s Biodiversity

Find out more about New Zealand's unique biodiversity by exploring a range of different ecosystems and the key role of s..

Non-Mendelian Inheritance
Non-Mendelian Inheritance

In this tutorial, find out more about certain types of inheritance that does not follow the Mendelian inheritance patter..

Related Articles...

No related articles found

See all Related Topics