[tlhIngan Hol] expressing "body parts" {'ay'Du'} or {'ay'mey}

Suppose I want to say "reproductive organs of the human body". Of course, since we don't have a word meaning "organ" as in "organ of the human body", I choose the next best thing I can find which is {'ay'}. So I ask.. {ngaghmeH 'ay'mey} or {ngaghmeH 'ay'Du'}? -- Dana'an https://sacredtextsinklingon.wordpress.com/ Ζεὺς ἦν, Ζεὺς ἐστίν, Ζεὺς ἔσσεται· ὦ μεγάλε Ζεῦ