"The cervical curve, convex forward, begins at the apex of the odontoid (
tooth-like) process, and ends at the middle of the second thoracic vertebra; it is the least
marked of all the curves."
I think the marked means noticeable in the sentence because of the least curve. Is that right?
*quoted from
http://en.wikipedia.org/wiki/Vertebral_column#cite_note-0