As the largest organ in the body, the skin is the primary component of the body’s integumentary system. The nails, hair, sweat glands, and sebaceous glands are considered accessory structures to the skin. Together, the skin and its associated structures play a number of crucial roles, including helping the body maintain homeostasis.
The skin is made up of the epidermis, dermis, and subcutaneous tissue:
• The epidermis is the outer layer of skin. It protects the body from harmful substances such as bacteria, viruses, and chemicals. It also helps regulate immune response and produces melanin, which gives skin its color and protects it from UV exposure.
• The dermis lies below the epidermis and is primarily made of connective tissue (which is mostly made up of collagen). This layer is where sweat is produced as a response to heat and stress. It’s also the site of sebaceous glands, which release a sebum to hydrate hair follicles. Blood vessels and nerve endings in the dermis help to regulate body temperature as well.
• The subcutaneous tissue, or hypodermis, is the deepest layer of the skin and contains adipose tissue (fat) that helps regulate body temperature and serves as a cushion for the body’s internal organs.
Because it is constantly exposed to the outside environment, the skin is especially susceptible to injury and disorders. Common skin issues include eczema, acne, psoriasis, rosacea, and skin cancer.
Further Reading:
Skin Structure, Function, & Health Tips
Best Essential Oils for Wrinkles
Top Supplements for Oily Skin
9 Essential Oils for Skin Tightening
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