Anatomy and Physiology of Hair ( Hair and Scalp Disorders )

Publication series : Hair and Scalp Disorders

Author: Bilgen Erdoğan  

Publisher: IntechOpen‎

Publication year: 2017

E-ISBN: INT6300267269

P-ISBN(Paperback): 9789535130970

P-ISBN(Hardback):  9789535130987

Subject: R75 Dermatology and Venereology

Keyword: 皮肤病学与性病学

Language: ENG

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Anatomy and Physiology of Hair

Description

Hair is one of the characteristic features of mammals and has various functions such as protection against external factors; producing sebum, apocrine sweat and pheromones; impact on social and sexual interactions; thermoregulation and being a resource for stem cells. Hair is a derivative of the epidermis and consists of two distinct parts: the follicle and the hair shaft. The follicle is the essential unit for the generation of hair. The hair shaft consists of a cortex and cuticle cells, and a medulla for some types of hairs. Hair follicle has a continuous growth and rest sequence named hair cycle. The duration of growth and rest cycles is coordinated by many endocrine, vascular and neural stimuli and depends not only on localization of the hair but also on various factors, like age and nutritional habits. Distinctive anatomy and physiology of hair follicle are presented in this chapter. Extensive knowledge on anatomical and physiological aspects of hair can contribute to understand and heal different hair disorders.

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