Narisawa Y, Hashimoto K, Kohda H
Department of Internal Medicine, Saga Medical School, Japan.
Br J Dermatol. 1996 Mar;134(3):494-8.
The follicular proximal ends of arrector pili muscles anchor the bulge areas of human hair follicles. However, the location of the ends of these muscles towards the epidermis, especially the fine points of attachment, is not fully understood. Conventional serial sections of the scalp skin of a 12-month-old infant were examined. Most of the distal ends were situated in the upper dermis, while some seemed to be in close contact with the epidermal basal layers. In vertical sections of the scalp skin of 36-week-old fetus, double immunoenzyme staining showed a close topographic correlation between the epidermal ends of the arrector pili muscles and the epidermal and dermal Merkel cells. These findings allow speculation that fetal Merkel cells participate in the induction and alignment of arrector pili muscles.
立毛肌的毛囊近端附着于人类毛囊的隆突区。然而，这些肌肉末端朝向表皮的位置，尤其是附着的精细部位，尚未完全明确。我们检查了一名12个月大婴儿头皮皮肤的传统连续切片。大多数远端位于真皮上层，而有些似乎与表皮基底层紧密接触。在36周龄胎儿头皮皮肤的垂直切片中，双重免疫酶染色显示立毛肌的表皮末端与表皮和真皮的默克尔细胞之间存在密切的地形学相关性。这些发现提示胎儿默克尔细胞可能参与立毛肌的诱导和排列。
