I think you're thinking of the integumentary system to which the largest organ of the human body, skin, belongs to.
Which system covers the external surface of the body and manufactures vitamin D?
integumentary system
Endocrine
The integumentary system is your skin that covers your body.
skin
Your skin covers and protects your internal tissues and organs.
Four adult primary types of tissues form the "fabric" of the human organism: epithelial tissues (ET; covering/lining) is one of them and covers the body.
Hyaline cartilage covers the ends of bones in many joints. It provides a slippery surface to reduce friction during bone movement.
integumentary system
The integumentary system is your skin that covers your body.
The Epithelial tissue
skin
The invertebrate animal has an exoskeleton (external skeleton).
epithelial
Protects the inside of the of the body. Covers organs such as the small intestines. Provides warmth from the body onto the surface. Covers both muscle tissue and fat tissues and bones. Can heal itsself on the surface of the skin (The red thing you get and when you take it off it bleeds).
Your skin covers and protects your internal tissues and organs.
Skin. But composed of tissues: forming the "fabric" of the human organism. This is called epithelial tissues (ET; covering/lining).
Skin. But composed of tissues: forming the "fabric" of the human organism. This is called epithelial tissues (ET; covering/lining).
The skin covers and protects the body.
The skin is the tissue or organ that covers and protects the human body. It is the largest organ of the human body and serves multiple purposes.