What is the similarity between a human forelimb and a bat forelimb?

The similarity between a human forelimb and a bat forelimb lies in their underlying skeletal structure, which reflects a common evolutionary ancestor. Both limbs contain similar bones, such as the humerus, radius, and ulna, arranged in a way that allows for different functions. This homologous structure illustrates how different species can adapt their limbs for various purposes—grasping in humans and flying in bats—while still retaining a similar anatomical framework.