What are the microscopic hairs that help push the egg along the fallopian tubes called?

Cilia are the microscopic hair-like structures that line the fallopian tubes and play a crucial role in the movement of the egg. These tiny, hair-like projections have rhythmic beating patterns, which help propel the egg from the ovaries through the fallopian tubes toward the uterus. This action is vital for the process of fertilization, as it ensures that the egg moves efficiently through the reproductive tract.

Other options might represent different structures or functions. Flagella are similar to cilia but are typically longer and are commonly found in single-celled organisms for locomotion, rather than in the human reproductive system. Mucosa refers to the mucous membrane lining certain organs and cavities, which aids in secretion and absorption but does not have the same function as cilia. Villi are tiny, finger-like projections found in the intestines that increase surface area for absorption of nutrients but are unrelated to the movement of eggs in the reproductive system.