Answer:
Skin appendages, also referred to as adnexal structures, include hair, nails, and sweat and oil glands.
Eccrine glands are responsible for producing and secreting sweat, which helps to regulate body temperature and maintain overall skin health.
The eccrine sweat gland is composed of a coiled duct and a secretory portion. The duct is responsible for transporting sweat to the surface of the skin, while the secretory portion produces and secretes the sweat.
The eccrine sweat gland opens to the surface of the skin through a small opening called a pore.
Eccrine glands are mostly located on the palms of the hands, soles of the feet, and forehead, although they can also be found elsewhere on the body.
Apocrine sweat glands are responsible for producing a thicker, milky sweat that is high in protein and fatty acids. This type of sweat is released in response to emotional stress or physical arousal, and is believed to play a role in attracting potential mates.
Apocrine sweat glands are mostly located in the armpits and groin area, although they can also be found in other areas of the body, such as the ears and nipples.
Apocrine sweat glands open to the surface of the skin through a small opening called a pore, similar to eccrine sweat glands.
Apocrine sweat glands are composed of a coiled duct and a secretory portion, similar to eccrine sweat glands. However, the secretory portion of the apocrine gland is larger and more complex, and produces the thicker, milky sweat that is characteristic of this type of gland.