Forelimbs are the front limbs of vertebrates, including mammals, birds, reptiles, and amphibians. They serve various functions such as locomotion, manipulation, and support. In humans, forelimbs are known as arms, which consist of the upper arm, forearm, wrist, and hand. Different species have adapted their forelimbs for specific purposes. For example, the forelimbs of birds are modified into wings for flight, while whales have flippers for swimming. These adaptations demonstrate the versatility and evolutionary significance of forelimbs across different environments and lifestyles.