Life Science Final Practice Exam 2026 - Free Practice Questions and Study Guide

Hair follicles and sweat glands are located in the dermis. This middle skin layer provides the connective tissue support, blood vessels, and nerves that these structures need. Hair follicles form as invaginations of the epidermis but extend down into the dermis, and sweat glands are embedded within the dermal tissue with ducts that reach the surface through the epidermis. The outermost layer, the epidermis, is avascular and lacks glands, while the hypodermis (subcutaneous tissue) is primarily adipose tissue for insulation and cushioning, not where follicles or sweat glands reside. So, the dermis is the correct layer.