Morphology pattern recognition lecture 3 8/28/24

Morphology

The study of the forms of things, specifically applied to friction ridge skin in this context.

Friction Ridge Skin

Skin that has unique patterns used for identification, such as fingerprints, palm prints, and footprints.

Discrimination

The ability to recognize and understand the differences between individual friction ridge details.

Persistence

The characteristic of friction ridges remaining largely unchanged from fetal development until decomposition.

Biological Uniqueness

The concept that an individual's uniqueness is determined by their genetic makeup.

Embryology

The study of the development of embryos, particularly how it relates to the formation of friction ridge skin.

Volar Pads

Areas of skin where friction ridges form, acting as a template for their development.

Epidermis

The outer layer of skin that begins to form at approximately 1 week of embryonic gestational age (EGA).

Dermis

The layer of skin beneath the epidermis, which begins to differentiate around 4-8 weeks EGA.

Primary Ridge Formation

The process that begins around 10-10.5 weeks EGA, where basal cells rapidly divide to form the primary ridges.

Secondary Ridge Formation

Occurs between 15-17 weeks EGA, where secondary ridges appear between primary ridges.

Developmental Noise

Variability in phenotype among individuals with the same genetic and environmental background.

Developmental Stability

The concept of genetic stability within a population, contrasting with developmental noise.

Ridge Morphology

The unique structure of friction ridges that is difficult to replicate, contributing to individual identification.

Genetic Blueprint

The genetic information that outlines the potential for pattern formation in friction ridge skin.

Localized Stresses

Factors that influence the timing and pattern formation of friction ridges during development.