Which system is primarily responsible for support and shape of the body?

The skeletal system is primarily responsible for providing support and shape to the body. It consists of bones, cartilage, and ligaments that work together to create the structure necessary for maintaining the body's form. This system not only supports the body's weight but also protects vital organs, facilitates movement by serving as attachment points for muscles, and produces blood cells within the bone marrow.

While the muscular system assists in movement and the nervous system controls bodily functions, it is the skeletal system that forms the framework that defines the physical shape and integrity of the body. The endocrine system regulates bodily functions through hormones but does not influence the structural aspects of the body. Thus, the skeletal system is fundamentally responsible for providing the shape and support necessary for overall body structure.