Final answer:
Collagen and elastin are more widely spaced in the papillary layer of the skin, which is less dense compared to the reticular layer.
Step-by-step explanation:
In the skin, collagen and elastin are more widely spaced in the papillary layer than in the reticular layer. The papillary layer is the superficial layer of the dermis that is made of loose, areolar connective tissue, forming a loose mesh of these fibers. This layer is notable for its projections called dermal papillae that extend into the stratum basale of the epidermis. In contrast, the reticular layer found beneath the papillary layer is characterized by dense, irregular connective tissue with a tight meshwork of collagen and elastin fibers, giving it a reticulated appearance and providing the skin with structure and tensile strength.