Tulang jari, or phalanges, are the bones that make up the fingers and toes in humans. Each finger has three phalanges: the proximal, middle, and distal phalanx, while the thumb has two. The toes also consist of similar bones, with each toe having three phalanges, except for the big toe, which has two. These bones provide structure and support for movement. The phalanges are connected by joints, allowing for flexibility and dexterity. They play a crucial role in various activities, such as grasping objects and walking. Proper function of the tulang jari is essential for daily tasks and overall mobility.