Hair & Scalp SciencesPregunta 70 de 100
Sebum, which lubricates the hair and skin, is produced by the:
a.Sweat glands
b.Arrector pili muscle
c.Dermal papilla
d.Sebaceous (oil) glands
Explicación
The sebaceous glands secrete sebum, an oily substance that lubricates and protects the skin and hair. Overactivity can cause oily scalp conditions, while underactivity leads to dryness.
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