Final answer:
To pluralize a medical term ending in ex, the ending often changes to -ices for Latin-derived words. For more regular English plurals, -es is added. Also, possession is shown by adding 's or just an apostrophe for plural nouns.
Step-by-step explanation:
The correct way to pluralize a medical term that ends in ex often involves changing the -ex ending to -ices if the word is of Latin origin. For example, appendix becomes appendices, and cortex becomes cortices. However, for some terms, the more regular English plural with -es is acceptable, like indexes or vexes.
When it comes to pronouns, there's a growing acceptance of using plural pronouns, like 'they', as a singular form to be more inclusive. Adjustments can be made where using 'they' might cause confusion, either by rephrasing the sentence or reverting to gender-specific pronouns when appropriate and clear.
In English, we also add an apostrophe followed by an s ('s) to plural forms not ending in s to show possession, such as in 'the children's game' or 'the people's opinion,' and add an apostrophe after plural nouns that end in s like 'the friends' cars' or 'the workers' benefits'.
The Latin digraph ae is another indicative of plural forms in certain medical or scientific terms; for instance, amoebae from amoeba. Yet, in contemporary English usage, the regular plural -s form, such as amoebas, is also accepted.