Final answer:
The carpal bone located in the distal row on the medial side is the hamate, known for its prominent hook.
Step-by-step explanation:
The carpal bone that is located in the distal row on the medial side is the hamate bone. This bone is characterized by a distinctive extension known as the hook of the hamate. The hamate is one of the four bones in the distal row of carpal bones, which from lateral to medial are the trapezium, trapezoid, capitate, and hamate. These carpal bones are essential for the articulation at the carpometacarpal joints and are important to the movements of the hand at the wrist.