Question too vague. Resubmit. Are you thinking about physical structures or mechanical ?
The integumentary system protects and covers internal structures.
Integumentary system covers both internal and external body structures.
Carapace
The skin covers and protects the body.
Plasma membrane protects cellular structures. They are made up of lipids
The nuclear membrane covers as well as protects the nucleus.
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.
The sheetlike membrane that covers and protects tissues is called the epithelium. Epithelial tissues can be found lining various body cavities, organs, and structures to provide protection and regulate the exchange of substances.
The cell membrane, also known as the plasma membrane, covers and protects a cell. It controls what enters and leaves the cell, allowing for communication and maintaining the cell's internal environment.
A covering tissue is a type of tissue that protects and covers various structures in the body. Examples include epithelial tissue that covers organs and surfaces, connective tissue that provides structural support, and the skin which acts as a protective barrier for the body.
Epithelial tissue covers and protects underlying tissue.
The integumentary system covers and protects your body. This system includes the skin, hair, nails, and sweat glands, which help to provide a barrier against environmental threats and regulate body temperature.