ductus deferens


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

ductus

 [duk´tus] (pl. duc´tus) (L.)
ductus arterio´sus a fetal blood vessel that joins the aorta and pulmonary artery.
ductus de´ferens the excretory duct of the testis, which joins the excretory duct of the seminal vesicle to form the ejaculatory duct; called also vas deferens.
patent ductus arteriosus see patent ductus arteriosus.
ductus veno´sus a major blood channel that develops through the embryonic liver from the left umbilical vein to the inferior vena cava.

duc·tus def·er·ens

[TA]
the secretory duct of the testicle, extending from the epididymis, of which it is the continuation, to its merging with the excretory duct of the seminal gland to form the ejaculatory duct.

ductus deferens

duc·tus def·er·ens

(dŭk'tŭs def'ĕr-enz) [TA]
The secretory duct of the testicle, running from the epididymis, of which it is the continuation, to the prostatic urethra where it terminates as the ejaculatory duct.
Synonym(s): arteriola glomerularis efferens [TA] , deferent duct, spermatic duct, spermiduct (1) , vas deferens.

ductus

pl. ductus [L.] duct.

ductus arteriosus
a fetal blood vessel that joins the aorta and pulmonary artery. Abnormal persistence of an open lumen after birth results in a patent ductus arteriosus. Called also persistent or patent ductus arteriosus.
ductus choledochus
ductus deferens
the excretory duct of the testis, which in horses and ruminants joins the excretory duct of the seminal vesicle to form the ejaculatory duct; called also vas deferens.
ductus epididymis
the duct which, in combination with connective tissue and muscle, forms the head, body and tail of the epididymis and continues as the ductus deferens.
ductus epoophori longitudinales
ductus reuniens
the joining channel between the cochlea and sacculus of the membranous labyrinth of the inner ear.
ductus venosus
a major blood channel that develops through the embryonic liver from the left umbilical vein to the caudal vena cava and closes within a few days after birth. If it remains patent, a congenital portacaval anastamosis is created.
References in periodicals archive ?
The ductus deferens is coiled where it emerges from the epididymis.
Unlike the epididymis and efferent ducts, the ductus deferens has a well-defined tunica serosa.
The structure that is analogous to the broad ligament in females is much smaller in males and supports only the ampullae of the ductus deferens and the vesicular glands.
The wall of the abdominal air sac is penetrated to expose the testis and the ductus deferens located on the ventral aspect of the anterior pole of the kidney.
The ductus deferens is identified (Fig la) and carefully debrided as it emerges from the epididymis.
The use of a fine blunt probe aids in debriding and differentiating the ductus deferens within the subcutaneous space (Fig 2b).
Prostate gland One of the accessory sex glands located at the origin of the urethra at the site where the two ductus deferens converge.
Spermatic cord A band of connective tissue that extends from the abdominal cavity through the inguinal rings and supports the ductus deferens, lymphatics, nerves, and blood vessels that carry blood to and from the testes.
Vesicular glands A pair of male accessory sex glands situated laterally to the ductus deferens and dorsal to the pelvic urethra.
Several works agree with our results as for the epididymis size and position and the ductus deferens site and tortuousity (Kaupp; Lake, 1957; Amer & Shahin; Tingari, Mercadante et al.
The ductus deferens descending course parallel to the ureter in direction to the urodeo is similar in fowl (Lake, 1957; King), male pigeon (Mercadante et al.
and Lake (1957), we noticed that the ductus deferens distal extremity opens in the urodeo through the ductus deferens papilla.