Taxon notes (from WP): Most vertebrates have some form of duct to transfer the sperm from the testes to the urethra. In cartilaginous fish and amphibians, sperm is carried through the archinephric duct, which also partially helps to transport urine from the kidneys. In teleosts, there is a distinct sperm duct, separate from the ureters, and often called the vas deferens, although probably not truly homologous with that in humans. In cartilaginous fishes, the part of the archinephric duct closest to the testis is coiled up to form an epididymis. Below this are a number of small glands secreting components of the seminal fluid. The final portion of the duct also receives ducts from the kidneys in most species. In amniotes, however, the archinephric duct has become a true vas deferens, and is used only for conducting sperm, never urine. As in cartilaginous fish, the upper part of the duct forms the epididymis. In many species, the vas deferens ends in a small sac for storing sperm. The only vertebrates to lack any structure resembling a vas deferens are the primitive jawless fishes, which release sperm directly into the body cavity, and then into the surrounding water through a simple opening in the body wall.

NCIT:C12813

http://upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Male_anatomy_en.svg/200px-Male_anatomy_en.svg.png

NCIt:C12813

MA:0000413

EFO:0000981

EMAPA:18681

MESH:A05.360.444.930

http://upload.wikimedia.org/wikipedia/commons/d/d1/Male_anatomy_en.svg

BTO:0001427

CALOHA:TS-1105

MESH:D014649

GAID:404

FMA:19234

galen:VasDeferens

OpenCyc:Mx4rvjv7bpwpEbGdrcN5Y29ycA

VHOG:0001135

EV:0100105

UMLS:C0042360

MIAA:0000129

MSH:D014649

Wikipedia:Vas_deferens

SNOMEDCT:245467009

http://www.snomedbrowser.com/Codes/Details/245467009

http://linkedlifedata.com/resource/umls/id/C0042360

http://en.wikipedia.org/wiki/Vas_deferens

duct that transports sperm from the testis. In mammals this is from the epididymis.

A secretory duct that transports sperm from the testis. In mammals this is a continuation of the epididymis and ends in the prostatic urethra where it terminates to form ejaculatory duct

http://upload.wikimedia.org/wikipedia/commons/d/d1/Male_anatomy_en.svg

deferent duct

sperm duct

Entire vas deferens

ductus deferens

vas deferen

vasa deferentia

uberon

sperm duct

vasa deferentia

http://purl.obolibrary.org/obo/NCBITaxon_7742

The continuation of the archinephric duct, now called the deferent duct, extends caudally to the cloaca or to the part of the mammalian urethra that is derived from the cloaca.[well established][VHOG]

UBERON:0001000

http://purl.obolibrary.org/obo/uberon#efo_slim

http://purl.obolibrary.org/obo/uberon#vertebrate_core

http://purl.obolibrary.org/obo/uberon/core#uberon_slim

http://purl.obolibrary.org/obo/uberon/core#pheno_slim

http://purl.obolibrary.org/obo/uberon/core#efo_slim

http://purl.obolibrary.org/obo/uberon#uberon_slim

http://purl.obolibrary.org/obo/uberon/core#vertebrate_core

vas deferens

UBERON:0001000

http://purl.obolibrary.org/obo/UBERON_0000079

vas deferens

Most vertebrates have some form of duct to transfer the sperm from the testes to the urethra. In cartilaginous fish and amphibians, sperm is carried through the archinephric duct, which also partially helps to transport urine from the kidneys. In teleosts, there is a distinct sperm duct, separate from the ureters, and often called the vas deferens, although probably not truly homologous with that in humans. In cartilaginous fishes, the part of the archinephric duct closest to the testis is coiled up to form an epididymis. Below this are a number of small glands secreting components of the seminal fluid. The final portion of the duct also receives ducts from the kidneys in most species. In amniotes, however, the archinephric duct has become a true vas deferens, and is used only for conducting sperm, never urine. As in cartilaginous fish, the upper part of the duct forms the epididymis. In many species, the vas deferens ends in a small sac for storing sperm. The only vertebrates to lack any structure resembling a vas deferens are the primitive jawless fishes, which release sperm directly into the body cavity, and then into the surrounding water through a simple opening in the body wall.

http://purl.obolibrary.org/obo/UBERON_0000079

http://purl.obolibrary.org/obo/UBERON_0005904

http://purl.obolibrary.org/obo/UBERON_0000025