Border Furrow 1) (Sulcus Limitans, Pna, Bna, Jna; Lne)

The border groove (lat. Sulcus Limitans) is an anatomical formation that is found in several areas:

1. A pair of longitudinal depressions on the inner surface of the lateral wall of the neural tube, dividing it into alar (dorsolateral) and basal (ventrolateral) plates.

2. A pair of depressions in the rhomboid fossa, limiting the medial eminence from the outside.

3. A linear depression on the outer surface of the right atrium, corresponding to the border ridge on its inner surface.

4. A transverse depression on the back of the tongue that separates its body and root.

Thus, the border fissure performs a delimiting function in various anatomical structures - from the brain to the tongue. It allows you to divide large formations into smaller components.

Border groove 1) (sulcus limitans, pna, bna, jna; lne) is a paired longitudinal depression on the inner surface of the lateral wall of the neural tube, which divides it into the alar (dorsolateral) and basal (ventrolateral) plates.

2. The border groove of the rhomboid fossa (sulcus limitans, PNA, BNA, JNA) is a paired depression in the rhomboid fossa, limiting the medial eminence from the outside.

3. The border groove of the right atrium (sulcus terminalis, PNA) is a linear depression on the outer surface of the right atrium, corresponding to the border ridge on its inner surface.

4. The border groove of the tongue (sulcus terminalis, PNA, BNA, JNA) is a transverse depression on the back of the tongue, separating its body and root.