Sebaceous gland
From Wikipedia, the free encyclopedia
Sebaceous glands are microscopic glands in the skin which secrete an oily matter (sebum) in the hair follicles to lubricate the skin and hair of animals. In humans, they are found in greatest abundance on the face and scalp, though they are distributed throughout all skin sites except the palms and soles.[1] The extreme use (up to 10 times doctor prescribed amounts) of anabolic steroids by bodybuilders for muscle gain and repartitioning effects tend to stimulate the sebaceous glands which can cause acne.[2]
Sebum can also build up around body piercings.[3]
Contents |
[edit] Sebum composition
The composition of sebum varies from species to species; in humans, the lipid content is as follows:[4]
| Percent composition | Substance |
| 25% | wax monoesters |
| 41% | triglycerides |
| 16% | free fatty acids |
| 12% | squalene |
[edit] Additional images
 Pilosebaceous unit |
 Base of pilosebaceous unit |
 Insertion of sebaceous glands into hair shaft |
 A hair follicle with associated structures. |
[edit] See also
[edit] References
- ^ James, William; Berger, Timothy; Elston, Dirk (2005) Andrews' Diseases of the Skin: Clinical Dermatology (10th ed.). Saunders. Page 7. ISBN 0721629210.
- ^ Abuse Of Anabolic Steroids Causes Acne In Bodybuilders, by Medinda.com
- ^ Playe, Stephen J (July 2002). "Infectious Complications of Body Art: Infection is reported in about 1% of tattoos and in up to 45% of piercings, depending on the technique employed, body location, and after care". Emergency Medicine News 24 (7): 10–13. doi:. ISSN 1552-3624. http://www.em-news.com/pt/re/emmednews/abstract.00132981-200207000-00007.htm;jsessionid=J3QHjVQl5vQqyyYhpdNxppJvvBPpkX7jNgj7f6HKFwsk6JhqCtp9!928310026!181195629!8091!-1.
- ^ Cheng JB, Russell DW (2004). "Mammalian wax biosynthesis. II. Expression cloning of wax synthase cDNAs encoding a member of the acyltransferase enzyme family". J. Biol. Chem. 279 (36): 37798–807. doi:. PMID 15220349. http://www4.utsouthwestern.edu/moleculargenetics/pdf/dr_cur_res/JBiolChem2004-II.pdf.
[edit] External links
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