duct

duct

 [dukt]

a passage with well-defined walls, especially a tubular structure for the passage of excretions or secretions. adj., adj ductal.

accessory duct of Santorini a tubular structure that drains the lower part of the head of the pancreas.

alveolar d's small passages connecting the respiratory bronchioles and the alveolar sacs.

Bartholin's duct (duct of Bartholin) the larger and longer of the sublingual ducts.

bile d's (biliary d's) see bile ducts.

cochlear duct a spiral membranous tube in the bony canal of the cochlea between Reissner's membrane and the basilar membrane; it is divided into the scala tympani, scala vestibuli, and spiral lamina. Called also scala media.

common bile duct a duct formed by the union of the cystic and hepatic ducts; see also bile ducts.

cystic duct the passage connecting the gallbladder neck and the common bile duct.

efferent duct any duct that gives outlet to a glandular secretion.

ejaculatory duct the duct formed by union of the ductus deferens and the duct of the seminal vesicles, opening into the prostatic urethra on the colliculus seminalis.

endolymphatic duct a canal connecting the membranous labyrinth of the ear with the endolymphatic sac.

excretory duct one through which the secretion is conveyed from a gland.

hepatic duct the excretory duct of the liver, or one of its branches in the lobes of the liver; see also bile ducts.

Hepatic duct. From Applegate, 2000.

lacrimal duct the excretory duct of the lacrimal gland; see also lacrimal apparatus. Called also lacrimal canaliculus.

lacrimonasal duct nasal duct.

lactiferous d's ducts conveying the milk secreted by the lobes of the breast to and through the nipples.

lymphatic duct, left thoracic duct.

lymphatic d's see lymphatic ducts.

mammary duct lactiferous ducts.

mesonephric duct an embryonic duct of the mesonephros, which in the male becomes the epididymis, ductus deferens and its ampulla, seminal vesicles, and ejaculatory duct, and in the female is largely obliterated.

müllerian duct either of the two paired embryonic ducts developing into the vagina, uterus, and fallopian tubes, and becoming largely obliterated in the male.

nasal duct (nasolacrimal duct) the downward continuation of the lacrimal sac, opening on the lateral wall of the inferior meatus of the nose; see also lacrimal apparatus.

pancreatic duct the main excretory duct of the pancreas, which usually unites with the common bile duct before entering the duodenum at the major duodenal papilla; see also bile ducts.

papillary d's straight excretory or collecting portions of the renal tubules, which descend through the renal medulla to a renal papilla.

paramesonephric duct müllerian duct.

paraurethral d's Skene's glands.

parotid duct the duct by which the parotid glands empty into the mouth.

prostatic d's minute ducts from the prostate, opening into or near the prostatic sinuses on the posterior wall of the urethra.

lymphatic duct, right a vessel draining lymph from the upper right side of the body, receiving lymph from the right subclavian, jugular, and mediastinal trunks when those vessels do not open independently into the right brachiocephalic vein.

salivary d's the ducts of the salivary glands.

semicircular d's the long ducts of the membranous labyrinth of the ear.

seminal d's the passages for conveyance of spermatozoa and semen.

sublingual d's the excretory ducts of the sublingual salivary glands.

submandibular duct (submaxillary duct) the duct that drains the submandibular gland and opens at the sublingual caruncle.

tear duct lacrimal duct.

thoracic duct a duct beginning in the cisterna chyli and emptying into the venous system at the junction of the left subclavian and left internal jugular veins. It acts as a channel for the collection of lymph from the portions of the body below the diaphragm and from the left side of the body above the diaphragm.

duct

(dŭkt), [TA]

A tubular structure giving exit to the secretion of a gland or organ, capable of conducting fluid.
See also: canal.

Synonym(s): ductus [TA]

[L. duco, pp. ductus, to lead]

duct

(dukt) a passage with well-defined walls, especially a tubular structure for the passage of excretions or secretions.duc´tal

---

aberrant duct  any duct that is not usually present or that takes an unusual course or direction.

alveolar ducts  small passages connecting the respiratory bronchioles and alveolar sacs.

Bartholin's duct  the larger of the sublingual ducts, which opens into the submandibular duct.

Bellini's duct  papillary d.

bile duct 

1. any of the passages that convey bile in and from the liver.

2. common bile d.

biliary duct  bile d.

branchial ducts  the drawn-out branchial grooves which open into the temporary cervical sinus of the embryo.

cochlear duct  a spiral tube in the bony canal of the cochlea, divided into the scala tympani and scala vestibuli by the lamina spiralis.

common bile duct  the duct formed by the union of the cystic and hepatic ducts.

ducts of Cuvier  two short venous trunks in the fetus opening into the atrium of the heart; the right one becomes the superior vena cava.

cystic duct  the passage connecting the gallbladder neck and the common bile duct.

deferent duct  ductus deferens.

efferent duct  any duct which gives outlet to a glandular secretion.

ejaculatory duct  the duct formed by union of the ductus deferens and the duct of the seminal vesicle, opening into the prostatic urethra on the colliculus seminalis.

endolymphatic duct  a canal connecting the membranous labyrinth of the ear with the endolymphatic sac.

duct of epididymis  the single tube into which the coiled ends of the efferent ductules of the testis open; its convolutions make up most of the epididymis.

excretory duct  one that is merely conductive and not secretory.

genital duct  see under canal.

hepatic duct  the excretory duct of the liver (common hepatic d.), or one of its branches in the lobes of the liver (left and right hepatic d's).

interlobular ducts  channels between different lobules of a gland.

lacrimal duct  see under canaliculus.

lactiferous ducts  ducts conveying the milk secreted by the mammary lobes to and through the nipples.

Luschka's ducts  tubular structures in the wall of the gallbladder; some are connected with bile ducts, but none with the lumen of the gallbladder.

lymphatic ducts  channels for conducting lymph.

lymphatic duct, left  thoracic d.

lymphatic duct, right  a vessel draining lymph from the upper right side of the body, receiving lymph from the right subclavian, jugular, and mediastinal trunks when those vessels do not open independently into the right brachiocephalic vein.

mesonephric duct  an embryonic duct of the mesonephros, which in the male develops into the epididymis, ductus deferens and its ampulla, seminal vesicles, and ejaculatory duct and in the female is largely obliterated.

duct of Müller , müllerian duct paramesonephric d.

nasolacrimal duct  the canal conveying the tears from the lacrimal sac to the inferior meatus of the nose.

omphalomesenteric duct  yolk stalk.

pancreatic duct  the main excretory duct of the pancreas, which usually unites with the common bile duct before entering the duodenum.

papillary duct  a wide terminal tubule in the renal pyramid, formed by union of several straight collecting tubules and emptying into the renal pelvis.

paramesonephric duct  either of the paired embryonic ducts developing into the uterine tubes, uterus, and vagina in the female and becoming largely obliterated in the male.

paraurethral ducts of female urethra  inconstantly present ducts in the female, which drain a group of the urethral glands into the vestibule.

paraurethral ducts of male urethra  the ducts of the urethral glands situated in the spongy portion of the male urethra.

parotid duct  the duct by which the parotid gland empties into the mouth.

perilymphatic duct  cochlear aqueduct.

pronephric duct  the duct of the pronephros, which later serves as the mesonephric duct.

ducts of prostate gland , prostatic ducts see under ductule.

ducts of Rivinus  the small sublingual ducts which open into the mouth on the sublingual fold.

duct of Santorini  a small inconstant duct draining a part of the head of the pancreas into the minor duodenal papilla.

secretory duct  a smaller duct that is tributary to an excretory duct of a gland and that also has a secretory function.

semicircular ducts  the long ducts of the membranous labyrinth of the ear.

seminal ducts  the passages for conveyance of spermatozoa and semen.

spermatic duct  ductus deferens.

duct of Steno , Stensen's duct parotid d.

submandibular duct , submaxillary duct of Wharton the duct that drains the submandibular gland and opens at the sublingual caruncle.

tear ducts  the ducts conveying the secretion of the lacrimal glands.

thoracic duct  the canal that ascends from the cisterna chyli to the junction of the left subclavian and left internal jugular veins.

thyroglossal duct , thyrolingual duct an embryonic duct extending between the thyroid primordium and the posterior tongue.

urogenital ducts  the paramesonephric and mesonephric ducts.

Wharton's duct  submandibular d.

duct of Wirsung  pancreatic d.

wolffian duct  mesonephric d.

duct

(dŭkt)

n.

1. An often enclosed passage or channel for conveying a substance, especially a liquid or gas.

2. Anatomy A tubular bodily canal or passage, especially one for carrying a glandular secretion: a tear duct.

---

duct′al adj.

duct′less adj.

duct

Etymology: L, ducere, to lead

a narrow tubular structure, especially one through which material is secreted or excreted.

duct

(dŭkt) [TA]

A tubular structure giving exit to the secretion of a gland, or conducting any fluid.
See also: canal
Synonym(s): ductus [TA] .

[L. duco, pp. ductus, to lead]

duct

(dukt) [L. ductus, conveyance (for water)]

1. A narrow tubular vessel or channel, esp. one that conveys secretions from a gland.

2. A narrow enclosed channel containing a fluid, e.g., the semicircular duct of the ear.

accessory pancreatic duct

A duct of the pancreas leading into the pancreatic duct or the duodenum near the mouth of the common bile duct. Synonym: duct of Santorini

alimentary duct

An obsolete term for the thoracic duct.

alveolar duct

A branch of a respiratory bronchiole that leads directly to the alveolar sacs of the lungs.

See: alveolus for illus

Bartholin duct

See: Bartholin, Caspar (the younger)

BILE DUCTS

bile duct

Any of the intercellular passages that convey bile from the liver to the hepatic duct, which joins the duct from the gallbladder (cystic duct) to form the common bile duct (ductus choledochus), and which enters the duodenum about 3 in (7.6 cm) below the pylorus.

Synonym: biliary duct See: illustration

biliary duct

Bile duct.

Botallo duct

Ductus arteriosus.

cochlear duct

Cochlear spiral canal.

common bile duct

The duct that carries bile and pancreatic juice to the duodenum. It is formed by the union of the cystic duct of the gallbladder and the hepatic duct of the liver and is joined by the main pancreatic duct.

Synonym: ductus choledochus See: biliary tract for illus

cystic duct

The secretory duct of the gallbladder. It unites with the hepatic duct from the liver to form the common bile duct. See: biliary tract for illus

efferent duct

Any of a group of 12 to 14 small tubes that constitute the efferent ducts of the testis. They lie within the epididymis and connect the rete testis with the ductus epididymidis. Their coiled portions constitute the lobuli epididymidis.

ejaculatory duct

The duct that conveys sperm from the vas deferens and secretions from the seminal vesicle to the urethra.

endolymphatic duct

In the embryo, a tubular projection of the otocyst ending in a blind extremity, the endolymphatic sac. In the adult, it connects the endolymphatic sac with the utricle and saccule of the inner ear.

duct of the epoophoron

Gartner's duct.

excretory duct

Any duct that conveys a waste product from an organ, such as the collecting duct of the renal tubule.

Gartner duct

See: Gartner, Hermann

hepatic duct

Either of the ducts that receive bile from the right or left lobe of the liver and carries it to the common bile duct. Synonym: ductus hepaticus dexter; ductus hepaticus sinister

intercalated duct

Any of several short, narrow ducts that lie between the secretory ducts and the terminal alveoli in the parotid and submandibular glands and in the pancreas.

interlobular duct

A duct passing between lobules within a gland, e.g., one of the ducts carrying bile.

lacrimal duct

Any of the small excretory ducts of the lacrimal glands.

lactiferous duct

Any of 15 to 20 ducts that drain the lobes of the mammary gland. Each opens in a slight depression in the tip of the nipple.

Synonym: milk duct

DRAINAGE AREAS FOR LYMPHATIC DUCTS

lymphatic duct

Either of two main ducts conveying lymph to the bloodstream: the left lymphatic (thoracic) and the right lymphatic duct, which drains lymph from the right side of the body above the diaphragm. It discharges into the right subclavian vein. It is smaller than the left lymphatic duct.

See: thoracic duct; illustration

mesonephric duct

Wolffian duct.

milk duct

Lactiferous duct.

müllerian duct

Either of the bilateral embryonic tubes in the embryo from which the oviducts, uterus, and vagina develop in the female; in the male, they atrophy. Synonym: Müller duct

nasolacrimal duct

A membranous tube that runs in the nasolacrimal canal and drains tears from the lacrimal sac to the nasal cavity. It opens beneath the inferior nasal concha.

omphalomesenteric duct

Yolk stalk.

pancreatic duct

The duct that conveys pancreatic juice to the common bile duct and duodenum. Synonym: duct of Wirsung

papillary duct

Any of the large ducts formed by the uniting of the collecting tubules of the kidney; it empties into the renal pelvis.

papillary duct of Bellini

See: Bellini, Lorenzo

paramesonephric duct

The genital canal in the embryo. In females it develops into the oviducts, uterus, and vagina; in males it degenerates to form the appendix testis.

paraurethral duct

Skene duct.

parotid duct

Stensen duct.

prostatic duct

One of about 20 ducts that discharge prostatic secretion into the urethra. Synonym: duct prostaticus

duct of Rivinus

See: Rivinus, August

salivary duct

Any of the ducts that drain a salivary gland.

duct of Santorini

Accessory pancreatic duct.

secretory duct

Any of the smaller canals of a gland.

segmental duct

One of a pair of embryonic tubes located between the visceral and parietal layers of the mesoblast on each side of the body.

semicircular duct

One of three membranous tubes forming a part of the vestibular labyrinth of the inner ear. They lie within the semicircular canals and bear corresponding names: anterior, posterior, and lateral. The semicircular ducts originate from the utricle as a single common tube (crus communale). The three ducts then branch, and each follows the course of a different bony semicircular canal. At their far ends the ducts widen into an ampulla that contains a specialized endothelium that is sensitive to motion of the endolymph. Axons from receptor cells in these sensory epithelia transmit motion information to the brain via the vestibular division of the vestibulococchlear nerve (CN VIII). See: labyrinth for illus.

seminal duct

Any of the ducts that convey sperm, specifically the ductus deferens and the ejaculatory duct.

Skene duct

See: Skene, Alexander

spermatic duct

The secretory duct of the testicle that later joins the duct of the seminal vesicle to become the ejaculatory duct. Synonym: ductus deferens; vas deferens; testicular duct

Stensen duct

See: Stensen, Niels

striated duct

Any of a class of ducts within the lobules of glands, esp. salivary glands, that contain radially appearing striations within the cells, denoting the presence of mitochondria.

sublingual duct

Any of the secretory ducts of the sublingual gland.

See: Bartholin duct

tear duct

A duct that conveys tears. These include secretory ducts of lacrimal glands, and lacrimal and nasolacrimal ducts.

testicular duct

Spermatic duct.

thoracic duct

The main lymphatic duct, originating at the cisterna chyli. It passes upward through the diaphragm into the thorax and continues upward along the aorta and esophagus to the neck, where it turns to the left and enters the left subclavian vein near its junction with the left internal jugular vein. It receives lymph from all parts of the body except the right side of the head, neck, thorax, and upper extremity. See: lymphatic system for illus

thyroglossal duct

In the embryo, a duct that connects the thyroid diverticulum with the tongue. It eventually disappears, its point of origin being indicated as a pit, the foramen cecum. It sometimes persists as an anomaly.

umbilical duct

Yolk stalk.

utriculosaccular duct

A narrow tube emanating from the utricle, connecting it to the saccule, and opening into the endolymphatic duct of the inner ear.

vitelline duct

Yolk stalk.

wolffian duct

In the embryo, the duct leading from the mesonephros to the cloaca. From it develop the ductus epididymis, ductus deferens, seminal vesicle, ejaculatory duct, ureter, and pelvis of the kidney.

Synonym: mesonephric duct

duct

A tube or passage, especially one leading from a gland, through which a fluid or semisolid substance is conveyed.

duct

a tube for conveying fluids such as secretions of lymph in the body. In plants a duct may be formed from a row of elongated cells that have lost their interconnecting end walls, and carry water or air.

Duct

A tube through which various substances can pass. These substances can travel through ducts to another organ or into the bloodstream.

Mentioned in: Cholecystitis

duct

(dŭkt) [TA]

Tubular structure giving exit to secretion of a gland or organ.
See also: canal
Synonym(s): ductus.

[L. duco, pp. ductus, to lead]

duct,

n a small passage such as in glandular tissue.

duct, Bartholin's,

n See duct, sublingual.

duct, intercalated,

n a duct that is connected to an acinus of the salivary glands. See also acinus.

duct, nasopalatine

(nā´zōpal´ətīn),
n See cyst, nasopalatine.

duct, parotid,

n the duct of the parotid gland; it passes lateral to the masseter muscle and enters the oral cavity through the buccal tissues adjacent to the maxillary first and second molars. Older term is
Stenson's duct.

duct, Stensen's,

n.pr See duct, parotid.

duct, striated,

n a part of the ductal system to which the intercalated ducts are connected in the lobules of the salivary gland.

duct, sublingual

(subling´gwəl),
n the duct associated with sublingual salivary gland. Located on the floor of the oral cavity, inferior to the tongue. Older term is
Bartholin's duct.

duct, submandibular,

n the excretory duct of the submandibular glands; opens into the oral cavity at the sublingual caruncle on the floor of the mouth, posterior to the mandibular incisor teeth. Older term is
Wharton's duct.

duct, Wharton's,

n.pr See duct, submandibular.

duct

a passage with well-defined walls, especially a tubular structure for the passage of excretions or secretions. See also ductus.

---

accessory pancreatic duct

the duct of the dorsal pancreatic primordium that opens on the minor duodenal papilla. Called also Santorini's duct or duct of Santorini.

allantoic duct

see urachus.

alveolar duct

one of the final branches of the bronchial tree consisting of a tube whose walls are composed of alveoli.

bile duct, biliary duct

the passages for the conveyance of bile in and from the liver. See also bile duct.

cochlear duct

a spiral membranous tube in the bony canal of the cochlea divided into the scala tympani, scala vestibuli and spiral lamina.

common bile duct

a duct formed by the union of the cystic and hepatic ducts. See also bile duct.

cystic duct

the passage connecting the gallbladder neck and the bile duct.

efferent duct

any duct that gives outlet to a glandular secretion.

ejaculatory duct

the duct formed by union of the ductus deferens and the duct of the seminal vesicles, opening into the prostatic urethra on the colliculus seminalis. Found in the horse and ruminants.

endolymphatic duct

a canal connecting the membranous labyrinth of the ear with the endolymphatic sac.

epididymal duct

developed from the first part of the mesonephric duct.

excretory duct

one through which the secretion is conveyed from a gland.

duct of Gartner

see gartner's ducts.

hepatic duct

the excretory duct of the liver, or one of its branches in the lobes of the liver. See also bile duct.

incisive duct

one of a pair of ducts perforating the palate and which communicate between the mouth and the nasal cavity; they are thought to conduct chemicals for olfactory appraisal by the vomeronasal organ.

intralobar duct

ducts within lobes which provide drainage for secretions of lobes of glands.

intralobular duct

ducts found within lobules which provide drainage for secretions of lobules of glands.

lacrimal duct

one of the excretory ducts of the lacrimal gland. See also lacrimal apparatus.

lacrimonasal duct

nasolacrimal duct.

lactiferous duct

ducts conveying the milk secreted by the lobes of the mammary gland to the lactiferous sinuses or to the teats.

lobar duct

drains the secretions from the lobes of gland, connecting with the main excretory duct.

lobular duct

drains the secretions of lobules of glands.

lymphatic duct

larger lymph drainage vessels, e.g. thoracic duct.

lymphatic duct (left)

thoracic duct.

lymphatic duct (right)

a vessel draining lymph from the cranial right side of the body, receiving lymph from the right subclavian, jugular and mediastinal trunks when those vessels do not open independently into the right brachiocephalic vein.

mammary duct

lactiferous ducts.

mandibular duct

drainage duct of the mandibular salivary gland.

mesonephric duct

see mesonephric duct.

metanephric duct

the embryonic ureter.

müllerian duct

see müllerian duct.

nasal duct

the duct leading from the lacrimal sac, opening on the floor of the nasal vestibule. Called also nasolacrimal duct. See also lacrimal apparatus.

nasolacrimal duct

see nasal duct (above).

nasopalatine duct

see incisive duct (above).

pancreatic duct

the main excretory duct of the pancreas, which usually opens with the bile duct on the major duodenal papilla; may be a single duct, or two ducts which join, or two independent ducts opening into opposite sides of the intestine. See also bile duct. Called also Wirsung's duct.

papillary d's (kidney)

the straight excretory or collecting portions of the renal tubules, which descend through the renal medulla to a renal papilla or renal crest.

papillary duct (teat)

see teat canal.

paramesonephric duct

müllerian duct.

parotid duct

the duct by which the parotid gland empties into the mouth vestibule opposite the upper molars. See also parotid glands.

perilymphatic duct

see aqueduct of cochlea.

pronephric duct

the early embryonic duct from the primitive kidney which leads into the mesonephric duct in the embryo's later stages.

prostatic d's

minute ducts from the prostate, opening into or near the prostatic sinuses on the dorsal wall of the urethra.

salivary d's

the ducts of the salivary glands.

semicircular d's

the long ducts of the membranous labyrinth of the ear.

sublingual duct

the excretory ducts of the sublingual salivary glands.

submandibular duct

the duct that drains the submandibular gland and opens at the sublingual caruncle. Called also submaxillary duct.

submaxillary duct

submandibular duct (above).

tear duct

nasolacrimal duct.

thoracic duct

a duct beginning in the cisterna chyli and emptying into the venous system at the junction of the left subclavian and left jugular veins. It acts as a channel for the collection of lymph from the portions of the body caudal to the diaphragm and from the left side of the body cranial to the diaphragm.

thyroglossal duct

the transient, non-patent duct, from the thyroid gland to the floor of the pharynx which is the legacy of the development of the thyroid from the floor of the pharynx.

vitelline duct

see meckel's diverticulum.

Patient discussion about duct

Q. what are the risks of surgical removal of the cyst in acase of 5 years old girl with Thyroglossal Duct Cyst?

A. every surgery procedure has some risks, but while doing a Sistrunk (that procedure) the Doctor weigh the pro's and con's.
the possible complications for that procedure are:
* Excessive bleeding.
* Surgical-wound infection.
* Inadvertent injury to larynx (rare).

which are not so harsh... all of them manageable (if they actually do happen- not very common), and the operating Dr. took them in consideration.
i know it's scary buy don't worry :)