The layer of the epidermis that has two names is the Basal Cell Layer, which is also known as the Stratum Germinativum.
The epidermis, the outermost layer of our skin, is composed of several distinct layers, each with specific functions. One of the most vital of these layers is the basal layer.
Here's why the Basal Cell Layer is also known as the Stratum Germinativum:
- Basal Cell Layer: This is the more commonly used name. It refers to the layer's position at the base of the epidermis.
- Stratum Germinativum: This name highlights the critical function of this layer. "Germinativum" comes from the word "germinate," meaning to begin to grow. This is because the basal layer is where new skin cells are produced through cell division (mitosis). These newly formed cells then migrate upwards through the other layers of the epidermis, eventually being shed from the surface.
In essence, the Basal Cell Layer/Stratum Germinativum acts as the foundation and regenerative source of the epidermis. The cells found in this layer are basal keratinocytes which are single layer of columnar or cuboidal cells resting on the basement membrane.
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