reproductive system
http://purl.obolibrary.org/obo/UBERON_0000990
http://purl.obolibrary.org/obo/GO_0000003
http://upload.wikimedia.org/wikipedia/commons/5/52/Penis.svg
http://purl.obolibrary.org/obo/UBERON_0000066
http://purl.obolibrary.org/obo/UBERON_0000991
consider splitting genitalia from reproductive system
UBERON:0000990
http://purl.obolibrary.org/obo/FMA_75572
http://purl.obolibrary.org/obo/UBERON_0001033
http://purl.obolibrary.org/obo/UBERON_0002294
http://purl.obolibrary.org/obo/UBERON_0002423
http://purl.obolibrary.org/obo/UBERON_0001434
http://purl.obolibrary.org/obo/UBERON_0004456
http://purl.obolibrary.org/obo/UBERON_0001016
http://purl.obolibrary.org/obo/UBERON_0002390
http://purl.obolibrary.org/obo/UBERON_8450002
http://purl.obolibrary.org/obo/UBERON_0001009
http://purl.obolibrary.org/obo/UBERON_0001007
http://purl.obolibrary.org/obo/UBERON_0001004
http://purl.obolibrary.org/obo/UBERON_0002405
http://purl.obolibrary.org/obo/UBERON_0002330
http://purl.obolibrary.org/obo/UBERON_0002204
http://purl.obolibrary.org/obo/UBERON_0002416
http://purl.obolibrary.org/obo/UBERON_0000467