Final answer:
Historical naming or eponyms is the term that describes the practice of naming body structures after the person who first discovered and described them.
Step-by-step explanation:
The kind of naming where structures in the body are named after the person who first discovered and described them is known as historical naming or eponyms. This naming convention is commonly observed in the field of anatomy, where many structures are named after their discoverers as a way to honor their contributions. For example, the Achilles tendon is named after the Greek mythological hero Achilles, who was known for his strong and powerful legs.