Skin with all its appendages is known as:
Skin with all of its appendages is known as Integumentary system. It protects the body from external damage, loss of water etc. It includes hair and nails as well.(in case of animals/birds/reptiles- includes scales, feathers, hooves as well)
Pilosebaceous unit
Integumentary system
Reactive unit
Malpighian system
Disorders of sebaceous and sweat glands