What do you mean by Neuroanatomy

Neuroanatomy is the study of the structure and organization of the nervous system. In contrast to animals with radial symmetry, whose nervous system consists of a distributed network of cells, animals with bilateral symmetry have segregated, defined nervous systems.

The Neuroanatomy is the study of the relationship between structure and function in the nervous system. Neuroanatomy includes the study of macroscopic and microscopic structures. Macroscopic structures are larger structures, such as folds of the brain.

Explanation:

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.