Which system consists of 206 bones connected by joints?

The skeletal system is integral to the human body, consisting of 206 bones that provide structure, support, and protection to the body's organs and tissues. This system also facilitates movement by forming joints, which are connections that allow for flexibility and a range of motion between bones.

Bones serve as a reservoir for minerals, such as calcium and phosphorus, and are involved in the production of blood cells within the bone marrow. They can also influence the body's overall health and function through their role in facilitating movement and impact on posture and balance.

The muscular system, while vital for movement, is separate from the skeletal structure and primarily comprises muscles and tendons that work in conjunction with the bones. The nervous system, focusing on communication and control, involves the brain, spinal cord, and nerves, but does not include bones. Similarly, the endocrine system, which regulates bodily functions through hormones, does not encompass the framework of bones and joints.

This distinction highlights why the skeletal system is recognized specifically for its composition of bones and joints, making it the correct answer in this context.