Dermis: The dermis (corium) constitutes the greater part of total skin thickness and contributes strength and elasticity to the skin. The thickness of the dermis varies from 3 to 4 millimeters on the palms of the hands and the soles of the feet to less than 12 millimeter on the eyelids. It is composed of two layers of dense connective tissue. 1. Papillary layer (stratum papillare): A think layer which includes blood vessels, lymphatics and nerve endings. 2. Reticular layer (stratum reticulare): A thicker, deep layer consisting of connective tissue and containing sweat glands, sebaceous glands and hair follicles. (The reticular layer of the dermis merges with the subcutaneous tissue). The dermis is dense connective tissue which contains blood vessels, nerves, and glands.