metakarpofalangelled

Metakarpofalangelled refers to a bone structure found in the hands and feet of vertebrates. It describes the arrangement of the metacarpal bones, which form the palm or the metatarsals, which form the sole of the foot, articulating with the phalanges, the bones of the fingers or toes. In humans, the metacarpals are the five long bones in the hand between the carpals (wrist bones) and the phalanges. The phalanges are the bones of the fingers. Each finger typically has three phalanges (proximal, middle, and distal), while the thumb has two. Similarly, in the foot, the metatarsals connect the tarsals (ankle bones) to the phalanges of the toes. This articulation allows for a wide range of motion, crucial for grasping, manipulation, and locomotion. The specific number and arrangement of metakarpofalangelled bones can vary significantly across different species, reflecting adaptations for diverse lifestyles and environments. For instance, animals with specialized digits, like those used for climbing or digging, may exhibit modified metakarpofalangelled structures. This anatomical term is primarily used in comparative anatomy and paleontology to describe and compare limb structures.