The arrector pili and epidermis are related only in that the action of the arrector pili causes "goosebumps" to form at the epidermis.
Sebaceous glands, errector pili, and hair are all accessory organs or appendages of the skin that are rooted in the dermis. The epidermis is a layer of the skin, and is on top of and separate from the dermis.
arrector pili.
Arrector pili is the muscle the raises hair. This is taught in health class.
involuntary
arrector pili
arrector pili
Within the hair follicles.
''goose bumps'' are formed
Arrector Pili Muscle
hair follicles
arrector pili
The Arrector Pili muscle