In the skeletal system, which are the two main tissues responsible for structural support in the body?

The two main tissues responsible for structural support in the body are called the compact bone and the ligaments.

The Compact bone is a dense bone in which the bony matrix is solidly filled with organic ground substance and inorganic salts, leaving only tiny spaces (lacunae) that contain the osteocytes, or bone cells.

A Ligament is a fibrous connective tissue that connects bones to other bones. It also supports the internal organs.