Question

the singular form of the term that means a wall dividing two cavities is: multiple choice corpus. septum. corpora. septa. corpa.

Explanation:

In medical - related terminology, "septum" is the singular form for a wall dividing two cavities. "Corpus" refers to a body or mass, "corpora" is the plural of "corpus", "septa" is the plural of "septum", and "corpa" is not a standard medical term in this context.

Answer:

B. septum