By system, you mean category..
I'm not sure if you mean finger nails or like tool nails, so I'll give you both.
Finger nails: Body parts
Tool nails: Hardware
The integumentary system includes the hair, nails, and skin.
The integumentary system includes the hair, nails, and skin.Integumentary system
Integumentary System
The integumentary system includes the skin, hair, and nails. It serves as a protective barrier against infection, regulates body temperature, and helps with sensation.
The integumentary system includes the hair, nails, and skin.Integumentary system
The Integumentary system consists of the skin, hair, and nails.
It is the largest system of the human body, skin, nails and hair.
it is the function of the skin and nails
Nails are a part of the integumentary system which also consists of hair and skin.
The integumentary system (which also includes hair and nails).Integumentary System
part of the skin, which is an organ.
The integumentary system includes the hair, as well as the nails and skin.