🔺 The femur is the longest and strongest bone, designed to support body weight and enable movement. 🔺 Its ends, the proximal and distal epiphyses, contain spongy bone that reduces stress and holds red marrow. 🔺 The diaphysis or shaft consists of dense compact bone providing strength and rigidity. 🔺 The medullary cavity stores yellow marrow, an energy reserve made of fat cells. 🔺 The periosteum covers the bone externally, nourishing it and aiding repair. 🔺 Articular cartilage ensures smooth