The gingival sulcus (or gingival crevice) is that little ridge in your mouth where your teeth meet your gums. Keeping it clean is crucial for gum and tooth health. Good oral hygiene is important — and ...
- a sulcus in the mesial surface of the occipital lobe of the cerebrum ...
- a sulcus near the posterior end of each hemisphere that separates the parietal lobes and the occipital lobes in both hemispheres ...