Which term describes the pointed extremity of a conical structure?

The term that describes the pointed extremity of a conical structure is "apex." In geometry and anatomy, the apex is conventionally defined as the tip or the highest point from which other dimensions radiate. In the context of a cone, it is the narrow end opposite the base and represents the most pointed part of the structure.

This terminology is crucial because different contexts may use similar terms. For example, while "vertex" might suggest a point where two lines meet in geometry, it is not typically used to indicate the tip of a cone. The term "tip" could refer to a pointed end in general, but "apex" is the precise term used to describe the pointed extremity of conical shapes specifically. The base refers to the broader, wider part of the conical structure, establishing a clear distinction in anatomical or geometric contexts. Therefore, apex is the most accurate descriptor for the pointed extremity of a cone.