骨元(英语:osteon)或哈弗斯系统(英语:haversian system ),亦称骨质,是密质骨的基本功能单元。骨单位是大致圆柱形的结构,通常长几毫米, 直径约0.2毫米。 它们存在于大多数哺乳动物的许多骨骼以及某些鸟类,爬行动物和两栖动物中。[1]

Thumb
Diagram of a typical long bone showing both compact (cortical) and cancellous (spongy) bone.
事实速览 骨元 Osteon, 标识字符 ...
骨元
Osteon
Thumb
长骨皮质的横切面看到的密质骨图。
标识字符
拉丁文Osteon
MeSHD006253
格雷氏p.89
解剖学术语
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