respiratory tract
http://purl.obolibrary.org/obo/UBERON_0000065
http://purl.obolibrary.org/obo/UBERON_0008947
http://purl.obolibrary.org/obo/UBERON_0007026
http://purl.obolibrary.org/obo/UBERON_0001005
http://purl.obolibrary.org/obo/UBERON_0004119