Collum: parte del cuerpo entre cabeza y tórax.
   <(F): Cou: région du corps qui est située entre la tête et le reste du corps.
   <(Ing): Neck, cervix: part of body by which the head is connected to the trunk, it extends from the base of the cranium to the top of the shoulders. In anatomy, any constricted portion having a fancied resemblance to the neck of an animal. The germinative portion of an adult tapeworm, that develops the segments or proglottids; the region of cestode segmentation behind the scolex.