Layer under epidermis that contains connective tissue, hair follicles, sweat glands and nerve endings is known as:
dermis
The dermis, the skin's next layer, is a thick layer of fibrous and elastic tissue (made mostly of collagen, with a small but important component of elastin) that gives the skin its flexibility and strength. The dermis contains nerve endings, sweat glands and oil (sebaceous) glands, hair follicles, and blood vessels. The dermis contains connective tissue, sweat glands, hair follicles and nerve endings. Hypodermis: the innermost layer of the skin also called subcutis; consists of fat that provides insulation.