What are three distinguish characteristics of the arms and collar of anthropoid primates?

The arms and collar of anthropoid primates are characterized by their long, flexible limbs, which facilitate a wide range of movement and activities like climbing and swinging through trees. They have a highly mobile shoulder joint, allowing for greater rotational movement of the arms. Additionally, their collarbone (clavicle) is well-developed, contributing to the stability and range of motion in the upper body. These adaptations are crucial for their arboreal lifestyle and varied locomotion patterns.