峡部末端立毛肌附着处的 外毛根鞘 细胞增殖形成 隆突区（Bulge），为毛发上端的标记。 隆突部位目前被认为是毛囊干细胞存在的主要部位。 隆突区与立毛肌基部结合在一起。 横向截面方 …

2023年10月30日 · The hair bulb comprises the expanded portion of the inferior hair follicle and contains the dermal papilla and hair matrix. The dermal papilla consists of mesenchymal cells …

毛囊（Hair follicle）是用来生长毛发的皮肤器官，也是哺乳动物唯一终生呈周期性循环的器官，分布在除了手掌、脚掌和嘴唇以外的全身体表皮肤上。 毛囊可以帮助表皮维持机体免受外界环 …

The hair follicle is an organ found in mammalian skin. [1] It resides in the dermal layer of the skin and is made up of 20 different cell types, each with distinct functions. The hair follicle regulates …

2023年1月11日 · At the base of the hair, the hair root widens to a round hair bulb. The hair papilla, which supplies the hair root with blood, is found inside the bottom of the hair bulb. New hair …

毛发位于皮肤以外的部分称毛干（hair shaft），位于皮肤以内的部分称毛根（hair root），毛根末端膨大部分称毛球（hair bulb），包含在由上皮细胞和结缔组织形成的毛囊（hair follicles） …

2024年6月22日 · Three essential segments of hair follicles are found on the head: the infundibulum, isthmus, and lower follicle. The lower follicle is also known as the inferior …

2023年7月30日 · The hair bulb is the region of the follicle that actively produces hair. The bulb extends into the dermal layer of the skin and surrounds the dermal papilla, an important …

2023年1月17日 · Hair primarily serves for protection, warmth, and sensation. Human hair is made of keratin. The structure of the hair follicle includes the papilla, matrix, root, and bulb. The …

Hair is a keratinous filament growing out of the epidermis. It is primarily made of dead, keratinized cells. Strands of hair originate in an epidermal penetration of the dermis called the hair follicle. …