Sebaceous glands are which type of gland

The sebum being excreted by your body today began production around 8 days ago. Sebaceous Gland: Schematic view of a hair follicle with sebaceous gland. Sebaceous glands are involved in numerous conditions. During puberty, various hormones cause them to produce a lot of sebum and this therefore contributes to oily skin. If a duct of a sebaceous gland is clogged with sebum, a whitehead results. If this material is allowed to dry and oxidize, it will become darker, forming a blackhead.

If a sebaceous gland becomes infected, moderate and severe forms of acne are the result. The glands lining the ear canal that produce earwax cerumen are called ceruminous glands. They are modified sebaceous glands.

The secretory parts are lined by simple cuboidal epithelium. The ducts are lined by stratified 2 layers cuboidal epithelium.

Long thin myoepithelial cells are arranged helically around the periphery between the secretory cells and their basement membrane. When they contract, they increase the amount of sweat produced i. The sweat glands are simple tubular exocrine glands that are found in the superficial hypodermis bordering on the dermis. They discharge their contents onto the surface of the skin via coiled secretory ducts see the diagram opposite.

The ducts open out onto epidermal ridges at a sweat pore. They can be further classified as merocrine eccrine glands. They secrete a watery fluid which is hypotonic to plasma its evaporation is important for thermoregulation. About MyAccess If your institution subscribes to this resource, and you don't have a MyAccess Profile, please contact your library's reference desk for information on how to gain access to this resource from off-campus. Learn More. Sign in via OpenAthens. Sign in via Shibboleth.

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