Electrolysis Practice Exam

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Where is the skin thickest on the body?

Back
Palms and soles
Thighs
Face

The correct answer is: Palms and soles

The skin is thickest on the palms of the hands and the soles of the feet. This thickening is an adaptation to protect these areas from mechanical stress and abrasion, as they are often subjected to friction and pressure. The epidermis in these regions contains an additional layer known as the stratum lucidum, which is not present in thinner skin areas. This structure provides an extra barrier, making the skin tougher and more resilient to wear and tear. The other areas, such as the back, thighs, and face, have varying thicknesses of skin but do not possess the same level of protective layers as the palms and soles. Therefore, the unique composition of skin in these areas, specifically designed for durability and protection, leads to them being the thickest on the body.