Final answer:
The papillary layer of the dermis is composed of loose, areolar connective tissue, collagen, and elastic fibers. It contains blood vessels and nerve endings that supply nutrients and contribute to touch and sensation.
Step-by-step explanation:
The papillary layer of the dermis, also known as the upper layer of the dermis, is composed of loose, areolar connective tissue. It lies just beneath the epidermis and forms dermal ridges known as papillae. These papillae contain blood vessels that supply nutrients to the epidermis and nerve endings that contribute to touch and sensation. The composition of the papillary layer also includes collagen and elastic fibers that provide strength and elasticity to the skin.
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