The skeletal system includes what?

The skeletal system is primarily composed of bones, which form the framework of the body. The phalanges, in particular, are the bones of the fingers and toes, and they play a crucial role in hand and foot function and dexterity. This makes the phalanges a fundamental component of the skeletal system, as they contribute to the structure and mobility of the limbs.

In contrast, skin, connective tissue, and blood vessels are part of other systems in the body. Skin is the body's largest organ and is part of the integumentary system, functioning as a protective barrier. Connective tissue supports, binds, and connects different tissues and organs, but it is not categorized as part of the skeletal system; rather, it includes tendons, ligaments, and cartilage that help support the skeleton. Blood vessels are part of the circulatory system, responsible for transporting blood throughout the body. Each of these elements plays significant roles in bodily functions, but they do not classify as components of the skeletal system itself.