Patterns of epidermal ridges
have a role in diagnosing and delineating certain syndromes of congenital malformation  as well as in establishing twin zygosity  in anthropologic surveys  and in population genetics.
Table 2 shows the descriptive statistics of epidermal ridges
for male and female.
configurations in developmental defects, with particular reference to the ontogenetic factors which condition ridge direction, The American Journal of Anatomy (1926) 38(1):89-151.
In tented arch epidermal ridges
overtop a triradius (Fig.
The pattern of dermal papillae determines the early development of the epidermal ridges
. Early, in the fetal period, proliferation of the corium (dermis) forms papillary projections into the epidermis forming papillary ridges.
A study in the January 30 issue of Science helps crack the case of fingerprints' real job: Epidermal ridges
, fingerprints' professional name, likely serve as filters to help in the efficient detection of fine textures.
The difference in the number of epidermal ridges
between triradius A and triradius B of the right hand did not have statistical significance (p= 0.277; p > 0.05).
The study of epidermal ridges
, patterns formed by them in palmar and plantar regions and flexion creases is known as dermatoglyphics.
Dermatoglyphics is the scientific study of epidermal ridges
and their configuration on palmar and plantar region.