Dermis

Dermis

The thicker layer of skin located below the epidermis, composed of moderately dense connective tissue.

Papillary region

The upper layer of the dermis containing dermal papillae that project into the epidermis.

Reticular layer

The deeper layer of the dermis characterized by thicker, interwoven collagen fibers that provide tensile strength.

Fibroblasts

Specialized cells in the dermis responsible for producing collagen and fibrous tissue.

Collagen

A structural protein that provides tensile strength to the dermis.

Elastic fibers

Fibers that provide elasticity and flexibility to the dermis.

Ground substance

The glycoprotein substance filling the spaces between fibers in the dermis, contributing to its structure.

Skin turgor

The pressure of fluids inside the skin that gives it body and a three-dimensional structure.

Dendritic cells

Octopus-shaped cells in the dermis that detect antigens and communicate with the immune system.

Macrophages

Larger immune cells in the dermis that are phagocytic and provide the first line of defense against pathogens.

Mast cells

Cells in the dermis containing granules with histamine and other inflammatory mediators.

Adipocytes

Fat cells that store fat in vacuoles, primarily found in the hypodermis.

Hypodermis

The layer of tissue beneath the dermis, primarily composed of adipose tissue.

Adipose tissue

Loose connective tissue that stores fat and provides insulation and cushioning for the body.