Structure and Function of the Integumentary System

gland in the dermis that produces sweat containing lipids and proteins

muscle attached to hair follicles that supports each hair that exits the dermis. In cold conditions it contracts to release thermal energy.

modified apocrine gland in the external ear whose secretions mix with sebum to form earwax

thick, inner layer of skin just below the epidermis that makes up about 90 percent of the skin's thickness

gland in the dermis that secretes sweat made mostly of water and plays an important role in thermoregulation

outermost layer of skin, comprised of several sublayers

deepest layer of the skin, made up mostly of areolar connective tissue and adipose tissue

structural protein that lends durability and water impermeability to skin, hair, and nails

keratin-producing cell found in the skin

immune cell that engulfs foreign particles and pathogens when the skin is damaged

specialized sweat gland that secretes milk

cell in the deepest layer of the epidermis that produces melanin

type of receptor cell in the skin triggered by light touch

outer layer of the dermis; contains a network of small blood and lymph vessels that provide nutrients to the epidermis

deep layer of the dermis that contains hair follicles and sweat and oil glands

gland that is joined to a hair follicle that produces oil to keep the skin supple and prevent the growth of microorganisms

deepest layer of the epidermis; a single-celled layer of basal cells

outermost layer of skin; serves as the primary barrier against microbes and keeps the deeper layers from dehydrating

layer of the skin where keratinocytes produce keratin and then flatten and lose their nuclei

layer of the skin found only in certain areas of the body; provides extra padding and durability

layer of the epidermis that has a spiny appearance due to the keratinocytes that dominate it. It lends durability to skin.

gland that helps regulate body temperature through evaporative cooling