GENERAL HISTOLOGY

Detailed explanation-1: -The papillary dermis is composed of loose connective tissue that is highly vascular. The reticular layer is the deep layer, forming a thick layer of dense connective tissue that constitutes the bulk of the dermis. The dermis houses blood vessels, nerve endings, hair follicles, and glands.

Detailed explanation-2: -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-3: -18.3. The dermal papilla is a population of mesenchymal cells that reside just under the hair follicle.

Detailed explanation-4: -The dermis consists of two layers: The papillary layer is a thin outer layer of areolar connective tissue with fingerlike projections called dermal papillae that protrude into the epidermis. In the hands and feet, the dermal papillae generate epidermal ridges (sweat from the epidermal ridges leaves fingerprints).

Detailed explanation-5: -Location. The areolar tissue is found beneath the dermis layer and is also underneath the epithelial tissue of all the body systems that have external openings.