Glands
The major gland of the skin are the sebaceous glands and the sweat glands.
Sebaceous glands are simple, branched acinar gland.
Most are connected by a duct to the superficial ]art of a hair follicle.
thy produce sebum, an oily, white substance rich in lipids.
the sebum lubricates the hair and the surface of the skin, which prevents drying and protects against some bacteria.