sulcus
Noun
Meaning
A furrow; a groove; a fissure.
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For example, in humans, the upper bank of the calcarine sulcus responds strongly to the lower half of visual field (below the center), and the lower bank of the calcarine to the upper half of visual field.
However, its use is strongly associated with development of leukoplakia (a white patch in the mouth), usually in the buccal sulcus.
The left and right sides are also separated along most of its length by a vertical section of fibrous tissue (the lingual septum ) that results in a groove, the median sulcus on the tongue's surface.
The foramen cecum marks the end of this division (at about 2.5 cm from the root of the tongue) and the beginning of the terminal sulcus.
Presentation Receptive aphasia results from damage to Wernicke's area located posterior to the lateral sulcus in the left hemisphere of the brain.
Surface of the tongue Foramen cecum and terminal sulcus labelled above Tonge surface features The upper surface of the tongue is called the dorsum, and is divided by a groove into symmetrical halves by the median sulcus.