Cllitoris is the female homologue of pen-is. Both cllitoris and pen-is develop from gen-ital tub-ercle of the em-bryo and are the alternate form of the same structure. Usually it does not have the opening of ur-ethra unlike pen-is and thus it is generally not used for ur-ination. Cllitoris is the snse or-gan in fe-male and contain numerous nerve endings making it highly sensitive.