Institute of Human Anatomy on Instagram: "The Sound of Severe Arthritis: Cartilage vs Bone-on-Bone Listen closely to this real knee joint dissection - the difference in sound tells the whole story. WHAT YOU'RE HEARING: Tapping on remaining cartilage = cushioned sound Tapping on exposed bone = hard, direct contact This is severe arthritis where the protective cartilage has worn away completely in some areas, leaving bone grinding directly on bone with every movement. BEYOND ARTICULAR CARTILAGE: A

Invention on Instagram: "Bricklaying is one of humanity’s oldest crafts and its history reaches back to the first civilizations that sought permanence in their shelters. From the sun dried bricks of Mesopotamia to the fired clay of ancient Egypt, the same principle endures, stacking uniform blocks with mortar to create order, protection, and identity. What began as necessity evolved into artistry, shaping cities, temples, and homes that still stand as proof of human persistence and ingenuity. At