MICROANATOMY

Detailed explanation-1: -The papillary dermis is the uppermost layer of the dermis. It intertwines with the rete ridges of the epidermis and is composed of fine and loosely arranged collagen fibers. The papillary region is composed of loose areolar connective tissue.

Detailed explanation-2: -The top layer of the skin is the epidermis, which has protrusions on the surface called papillary ridges (fingerprint). These ridges overlay epidermal protrusions into the dermis (inner layer of skin) called intermediate ridges.

Detailed explanation-3: -Another feature of some parts of the papillary layer is dermal ridges. These ridges cause ridges in the overlying epidermis, called epidermal ridges. Those ridges and the sweaty marks they leave are what we call fingerprints.

Detailed explanation-4: -The boundary between the dermis and epidermis is of particular interest for friction ridge skin. The dermis and epidermis are joined by papillae, which are columnar protrusions from the dermis into the epidermis, and rete ridges, which are the areas of the epidermis surrounding the papillae.

Detailed explanation-5: -The dermis is composed of papillary and reticular layers of fibroblasts that synthesize a variety of ECM proteins (Ham and Cormack, 1979). The papillary layer lies subjacent to the basal layer of the epidermis and derives its name from the fact that it is thrown into papillae (ridges) that project into the epidermis.