The apocrine gland is a type of sweat gland found in specific areas of the body, such as the armpits and groin. These glands are larger than eccrine glands, another type of sweat gland, and they produce a thicker, milky secretion. Apocrine glands become active during puberty and are associated with body odor due to the breakdown of their secretions by bacteria on the skin. Unlike eccrine glands, which help regulate body temperature through sweat, apocrine glands are primarily linked to emotional responses and stress. Their secretions can be influenced by hormonal changes, making them significant in understanding certain physiological processes in the body.