What is divided into the papillary portion and the reticular portion.?

The dermis, which is the inner layer of the skin, is divided into two main portions: the papillary portion and the reticular portion. The papillary portion is the upper layer, composed of loose connective tissue, and contains finger-like projections called dermal papillae that interdigitate with the epidermis. The reticular portion is the thicker, deeper layer made of dense irregular connective tissue, providing strength and elasticity to the skin. Together, these layers support the skin's structure and house various structures such as blood vessels, nerves, and hair follicles.