part of gonad distal tip 2010-10-12T10:33:18Z BTO:0004876 BrendaTissueOBO The reproductive tract in the hermaphroditic nematode has two equivalent gonad arms. As it grows longer, that portion lying closer to the gonopore (vulva or cloaca) is termed the proximal arm, while the distal arm lies further away with the extreme end named the distal tip. mgr