Final answer:
The dermis of the skin consists of two layers: the papillary layer and the reticular layer. The papillary layer provides nutrients to the epidermis and contains sensory receptors. The reticular layer cushions subcutaneous tissues and performs various functions.
Step-by-step explanation:
The dermis, which is the thicker inner layer of the skin, consists of two layers: the papillary layer and the reticular layer. The papillary layer is the upper layer and is made up of loose connective tissues with dermal papillae extending into the epidermis. The reticular layer is the lower layer and is made up of dense collagen bundles, providing strength and elasticity to the skin.
The papillary layer's main function is to supply nutrients to the epidermis and serve as a sensory layer, containing receptors for touch and temperature. The reticular layer is responsible for cushioning subcutaneous tissues, regulating body temperature, sensing the environment, and excreting wastes.