Differentiate among sebaceous, eccrine, and apocrine glands. Sebaceous glands produce a protective substance called sebum that secretes through hairfollicles. Eccrine opens to the skins surface and produce sweat.
Apocrine glands produce a thick, milky.

The statements are true. Sebum is the main compound produced by the sebaceous gland which is expelled towards the skin through the hairs or the pores of the skin. The eccrine sweat glands are made up of a secretory glomerulus and an excretory duct that open directly to the surface of the skin. The apocrine glands, on the contrary, produce a milky liquid, also colorless and odorless.

Explanation:

The secretion of the sebaceous glands is controlled by the steroid hormones, circulating and produced locally by the pilosebaceous follicle from the precursors of gonadic and surrenalic origin. The sebaceous glands synthesize the sebum that lubricates and protects our skin. The eccrine glands are not connected to the hair follicles and function throughout life, responding to the increase in body temperature due to environmental heat or physical exercise. These glands are more common on the forehead, neck and back, where profuse sweating occurs on hot days and when a person is physically active. The apocrine sweat glands flow into the sebaceous pilo follicle, their content coming out together with the sebum. and they produce highly odorous substances that are responsible for the characteristic odor of areas such as the armpits and sexual organs.