What sweeps mucus down your throat?

Mucus is swept down the throat primarily by the action of cilia, which are tiny hair-like structures on the surface of epithelial cells lining the respiratory tract. These cilia beat in a coordinated manner, moving mucus and trapped particles upward toward the throat, where it can be swallowed or expelled. Additionally, the process of swallowing helps clear mucus from the throat and keep the airways clear.