Integumentary System EQ: What are the components of our skin?

Root Words Derm Skin Dermis Folic Small bag Follicle Kerat Horn Keratin Melan Black Melanin Seb Grease Sebaceous gland

Integumentary system System that includes the skin, which protects the body from the outside and is vitally important to other organs

Epidermis Outer layer of skin, composed of stratified squamous epithelium

Dermis Thicker, inner layer of skin which includes: elastic fibers, epithelial tissue, smooth muscle tissue, nervous tissue, and blood

Subcutaneous Layer Connective tissue (Adipose tissue) that binds the skin to underlying organs

Keratinization Older cells die and harden. Cytoplasm is filled with a tough Keratin protein. Is eventually shed from top layer of skin

Keratinization

Melanin Specialized cells called Melanocytes in the epidermis produce this dark pigment that provide skin color All races have same number of Melanocytes, but genetic differences control amount of melanin produced

Albinism Inherited disorder characterized by little or no melanin production

Melanism Mutation that causes excess amounts of melanin production

Sebaceous Gland Glands near the hair follicles that secrete an oil called Sebum. Sebum helps keep hair and skin soft, pliable, and waterproof

Sebaceous Gland

Sweat Gland Glands that secrete water, salt, and oil to help maintain temperature homeostasis

Eccrine Gland Most abundant sweat gland. Found on forehead, neck, and back. Produce sweat on hot days or during intense physical activity

Apocrine Gland Other type of sweat gland, developed during puberty. Secretes when person is upset, frightened, in pain, or during sexual arousal.

Left Side Activity Draw a section of your skin Label the different layers Label different parts (Refer to the first slide) Use color