Sweat glands are usually either merocrine (most common) or apocrine (a specialized merocrine gland usually found around armpits that may be responsible for body odor and potentially human pheromones).
Sweat glands are found in almost every part of the skin, forming tiny coiled tubes embedded in the dermis or subcutaneous fat. There are two types of sweat gland: eccrine glands and apocrine glands.
These two glands are found in the skin and are known as exocrine glands because they have a duct through which the substance travels.
If they do not have a duct and secrete a substance directly...