Final answer:
The prefix 'ana-' in the term 'anaplasia' refers to a reversal or 'back'. The term signifies a regression in differentiation of cells, commonly associated with tumors.
Step-by-step explanation:
In the term anaplasia, the prefix ana- typically means "back" or "again," indicating a reversal. Anaplasia can be understood by looking at the suffix "-plasia" which has to do with the formation, growth, or development of tissues or cells in the body. Therefore, anaplasia refers to a regression in the differentiation of cells, often seen in tumors where the cell loses the normal characteristics and differentiates in reverse to a more primitive form. It is a term frequently used in pathology. It's important for students to understand the meaning of anatomical terms. For example, in anatomical position, the body is viewed standardized to ensure clear communication, in the same way prefixes and suffixes standardized anatomy terms.