The dermis, the middle layer of skin, is composed of two distinct layers: the papillary dermis and the reticular dermis.
- Papillary Dermis: This layer is the more superficial layer of the dermis. It is made up of loose connective tissue, which is highly vascular. It contains capillaries, which are tiny blood vessels that supply nutrients and oxygen to the skin. The papillary dermis is also responsible for giving the skin its texture and flexibility.
- Reticular Dermis: This layer is the deeper and thicker layer of the dermis. It is made up of dense connective tissue, which provides strength and support to the skin. The reticular dermis also contains hair follicles, sweat glands, and sebaceous glands.
The thickness of the dermis varies across the body, with the thickest dermis found on the palms of the hands and the soles of the feet.
