What are limb bones?

Limb bones are the long bones that connect the joints of the limbs, such as the arms and legs. They are composed of a hard, outer layer of bone called the cortex and a softer, inner layer of bone called the medulla. The cortex is responsible for providing strength and support, while the medulla produces red blood cells and other blood cells.

Limb bones are classified according to their location in the limb. The long bones are the largest bones in the limbs and are located in the upper arm (humerus), forearm (radius and ulna), thigh (femur), and lower leg (tibia and fibula). The short bones are smaller bones that are located in the wrist, ankle, and foot. The flat bones are thin, flat bones that are located in the shoulder blade (scapula) and hip bone (pelvis).

Limb bones are important for providing support, strength, and movement to the limbs. They are also responsible for protecting the vital organs in the chest and abdomen.