Final answer:
Thick skin is found on parts of the body like the palms and soles due to increased friction in these areas, requiring a thicker epidermal layer for protection and durability. The dermis underneath provides sensation and thermoregulation.
Step-by-step explanation:
Thick skin can be found in areas of the body that handle a lot of friction and need extra protection, such as the palms of the hands, the soles of the feet, and the fingertips. These areas are thicker due to the increased depth of the epidermal layer, which is comprised of keratin-filled cells that serve as a barrier against water loss and pathogen invasion. Below the epidermis is the dermis, which is a much thicker layer containing essential structures like blood vessels, sweat glands, hair follicles, and sebaceous glands. This layer's thickness assists in providing cushioning and sensation, as well as temperature regulation for the body through its various glands and blood vessel networks.