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The vocal ligament [cross-section] is located on the free margin of the vocal fold. The rima glottidis [cross-section] is the space between the right and left true vocal cords. The space above the false vocal folds is the supraglottic space. The space below the vocal folds is the infraglottic space.
 

Links and References:
Grant's: 8.75
Netter: 75
Rohen/Yokochi: 157