Bones:
Bones: An Inside Look at Your Skeletal System
Human bones may not seem intriguing unless you find them in your closet, but they are often covered in layers of tissues and cells. Your bones are hard, solid, and modest, yet they store fat and minerals in addition to supporting your movement and guarding your interior organs. That's where your blood cells are made. Even the majority of the bone tissue is not solid. Consider taking a tour through your bones to witness it firsthand. But first, you'll have to cut through multiple layers of different tissues.