Which combining form refers to mucus?

The combining form that refers to mucus is "muc/o." This form is derived from the Latin word "mucus," which translates directly to mucus in English. In medical terminology, it is commonly used in various terms related to mucous membranes or secretions.

For instance, "mucous" describes tissues that produce mucus, while "mucosa" refers to a mucus-secreting membrane lining various cavities in the body. The use of "muc/o" is essential in understanding conditions or descriptions related to mucus, indicating its importance in both structural and functional contexts within the body.

Other choices represent different concepts: "morph/o" pertains to form or structure, "muscul/o" relates to muscle, and "my/o" is associated with muscle tissue. Each of these combining forms has distinct meanings and applications in medical terminology, but only "muc/o" specifically addresses mucus.