Palm and Sole Skin vs. Scalp: Key Differences Explained
Skin structure varies by site to meet functional demands.
| Feature | Palm & Sole (Glabrous) | Scalp (Hairy) |
|---|---|---|
| Epidermis thickness | Thick (0.4–0.6 mm); stratum corneum very thick, high keratin | Thin (0.05–0.1 mm); stratum corneum thinner |
| Dermis | Dense collagen/elastin; high tensile strength | Less dense; more pliable |
| Sweat glands | Numerous eccrine; thick, viscous sweat (grip, thermoregulation) | Numerous eccrine; thin, watery sweat (evaporative cooling) |
| Sebaceous glands | Absent | Abundant (with hair follicles); secrete sebum |
| Hair follicles | Absent | Numerous; terminal hair |
| Nerve endings | High density (Meissner's, Merkel, Pacinian) – fine touch, pressure | High density – touch, temperature, pain |
Summary: Palm/sole skin is thicker, tougher, hairless, sebaceous-free for durability and grip. Scalp skin is thinner, hair-bearing, sebaceous-rich for hair protection and thermoregulation.
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