Frontal bone

Japanese: frontal bone(英語表記)frontalbone
Frontal bone

...Of course, neither method is absolute, and it seems that the gender can be determined with a probability of about 90%, and the age can be determined with a range of about 3 to 5 years for young people and 5 to 15 years for adults. Skeleton Skull [Tsunetaro Fujita] [Tsuneo Fujita]
[Bones that form the human skull]
(Figure) Frontal bone (os frontale [Latin]) The frontal bone is the part of the neurocranium that forms the frontal region. It is a single bone, but in fetuses it develops as a pair of bones, one on the left and one on the right, which fuse together after birth. In adults, the frontal bone is sometimes divided into two halves by a suture down the midline.

*Some of the terminology that mentions "frontal bone" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…もちろん,両者とも絶対的のものではなく,性別はおよそ90%くらいの確率,年齢は若いところでは3~5年,成人では5~15年くらいの幅をもって鑑定できるようである。骨格髑髏(どくろ)【藤田 恒太郎】【藤田 恒夫】
【ヒトの頭蓋を形成する骨】
(図)前頭骨frontal bone(os frontale[ラテン])神経頭蓋のうち前頭部をつくる骨で,1個であるが,胎児では左右1対の骨として発生し,生後に合着する。成体でもまれに,前頭骨が正中部の縫合によって左右の両半に分かれていることがある。…

※「frontal bone」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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