翻訳と辞書 Words near each other ・ Abdominal aorta ・ Abdominal aortic aneurysm ・ Abdominal aortic plexus ・ Abdominal aura ・ Abdominal cavity ・ Abdominal compartment syndrome ・ Abdominal decompression ・ Abdominal distension ・ Abdominal epilepsy ・ Abdominal etching ・ Abdominal examination ・ Abdominal exercise ・ Abdominal external oblique muscle ・ Abdominal fascia ・ Abdominal guarding ・ Abdominal hair ・ Abdominal internal oblique muscle ・ Abdominal mass ・ Abdominal migraine ・ Abdominal musculature absent with microphthalmia and joint laxity ・ Abdominal obesity ・ Abdominal pain ・ Abdominal pregnancy ・ Abdominal reflex ・ Abdominal surgery ・ Abdominal thrusts ・ Abdominal trauma ・ Abdominal ultrasonography ・ Abdominal wall ・ Abdominal wall defect Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Abdominal hair ： ウィキペディア英語版 Abdominal hair The term abdominal hair refers to the hair that grows on the abdomen of humans and non-human mammals, in the region between the pubic area and the thorax (chest). The growth of abdominal hair follows the same pattern on nearly all mammals, vertically from the pubic area upwards and from the thorax downwards to the navel. The abdominal hair of non-human mammals is part of the pelage, (hair or fur). == In humans == Before puberty, the abdominal region of both males and females is covered with very fine vellus hair. In response to rising levels of androgens (mainly testosterone) during and after puberty, the skin of the abdomen begins to produce coarser, longer and more pigmented hair (terminal hair). This process affects primarily men. Initially hair grows in a vertical line from the pubic area up to the navel and from the thorax down to the navel. Slang terms for this line of hair include "happy line", "happy trail", "tiger line", or "treasure trail". Although the development of abdominal hair normally begins during puberty, it may also start later, between the ages of 20 and 30. With some men, the abdominal hair will stay within a clearly defined vertical line, but in others, terminal hair will appear laterally as well as vertically, particularly in the area around the navel. This lateral spreading can continue into middle age. The study noted below found that two in three young men have a (sagittal) "treasure trail" by the time they are seventeen, and nearly half have one by the time they are fifteen. Some women may develop a small line of hair from the pubic area up to the navel. Excessive abdominal hair on women, following the male pattern, is a type of hirsutism. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Abdominal hair」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.