Skin Glands: Sebaceous, Eccrine, and Apocrine Glands
Regarding the location where their ducts release their product, the ducts of sebaceous glands, in most cases, and apocrine sweat glands excrete their products into the hair follicle canal, and the eccrine sweat glands excrete directly onto the skin surface.
DISORDERS OF SEBACEOUS, ECCRINE AND APOCRINE GLANDS
Key factors are follicular keratinization, androgens, and Propionibacterium acnes (see Fig. 1-4). Follicular plugging (comedone) prevents drainage of sebum; androgens (quantitatively and qualitatively normal in serum) stimulate sebaceous glands to produce more sebum.
Chapter 83. Biology of Eccrine and Apocrine Glands
In humans, sweat glands generally are found as two types, (1) eccrine and (2) apocrine. Eccrine-gland sweat allows the body to control its internal temperature in response to thermal stress. Apocrine gland function is more obscure but likely includes pheromone production.
Disorders of Sebaceous, Eccrine, and Apocrine Glands
Follicular plugging (comedone) prevents drainage of sebum; androgens (quantitatively and qualitatively normal in serum) stimulate sebaceous glands to produce more sebum. Bacterial (C. acnes) lipase converts lipids to fatty acids and produces proinflammatory mediators (IL-I, TNF-α), which lead to an inflammatory response.
Chapter 85. Disorders of the Apocrine Sweat Glands
A primary epithelial germ (hair germ) grows down from the epidermis and forms an apocrine gland, sebaceous gland, and hair follicle. Apocrine glands are composed of three components: (1) the intraepithelial duct, (2) the intradermal duct, and (3) a coiled gland in the deep dermis or at the junction of the dermis and subcutaneous fat, which ...
Chapter 164. Epidermal Nevus and Nevus Sebaceous
Epidermal nevi (EN) are congenital hamartomas of ectodermal origin classified on the basis of their main component: sebaceous, apocrine, eccrine, follicular, or keratinocytic. Nevus sebaceous (NS) is a hamartoma of the epidermis, hair follicles, and sebaceous and apocrine glands.
Anorectum | Current Diagnosis & Treatment: Surgery, 15e ...
The gluteal skin includes hair, sebaceous glands, and sweat glands. This area, particularly 3-5 cm of anal margin skin circumferentially around the anus, can commonly become infected with the human papillomavirus, resulting in anal condyloma.
Chapter 79. Biology of Sebaceous Glands - McGraw Hill Medical
Sebaceous glands are composed of lipid-producing sebocytes and of keratinocytes that line the sebaceous ducts and are usually associated with a hair follicle. The periphery of the sebaceous gland is a basal cell layer composed of small, cuboidal, nucleated, highly mitotic sebocytes.
Skin | Junqueira's Basic Histology: Text and Atlas, 17th Edition ...
3 天之前 · Diagrammatic overview of skin, showing the three major layers and epidermal appendages (hair follicles, sweat, and sebaceous glands), the vasculature, and the major sensory receptors.
Chapter 165: Sebaceous Hyperplasia - McGraw Hill Medical
Sebaceous hyperplasia (SH) is a common, benign condition of sebaceous glands consisting of multiple asymptomatic small yellow papules with a central depression.