nasolacrimal duct
Tear-to-nose channel
The nasolacrimal duct is the channel that drains tears from the eye into the nasal cavity.
It runs from the lacrimal sac at the inner corner of the eye down through the bone to empty into the nose—which is why crying makes your nose run.
A blocked nasolacrimal duct causes excessive tearing and is common in infants.
Lacrimal drainage opening
- conjunctivaMucous membrane lining eyelids
- eyelidMovable ocular covering
- caruncleSmall fleshy protuberance
- inferior turbinateLowest nasal cavity bone
orbital · cornea · sclera · ophthalmology · nasopharynx
Fluid exiting a system
- passageSegment of text
- channelPassage for transmission
- conduitTube conveying fluid or cables
- flushSame suit, five cards
clearance · secretion · excretion · mucous membrane · epithelium · patency · obstruction · stenosis
Obstruction halting movement
- obstructionSomething blocking the way
- tearingForcibly separating material
- dischargeRelease of substance outward
- purulentPus-filled or pus-forming
inflammation · swelling · infection · abscess · congenital · stenosis · fistula · staphylococcus
Violent pulls apart
- wateringSupplying with moisture
- tearingForcibly separating material
- cryingEmotional tear release
- weepingShedding tears audibly
emotional tears · overflow · tear production · irritation · dry eye
punctum
Lacrimal drainage opening
- conjunctivaMucous membrane lining eyelids
- eyelidMovable ocular covering
- caruncleSmall fleshy protuberance
inferior turbinate · orbital · cornea · sclera · ophthalmology · nasopharynx
outflow
Fluid exiting a system
flush · clearance · secretion · excretion · mucous membrane · epithelium · patency · obstruction · stenosis · atresia
blockage
Obstruction halting movement
- obstructionSomething blocking the way
- tearingForcibly separating material
- dischargeRelease of substance outward
purulent · inflammation · swelling · infection · abscess · congenital · stenosis · fistula · staphylococcus · antibiotics
tears
Violent pulls apart
weeping · emotional tears · overflow · tear production · irritation · dry eye
- ductsvas deferens, oviduct, ductwork
- eye anatomyeyeball, cornea, iris, retina, pupil
- tear systemtears, tear gland, tear glands, tear ducts, tear production
- Orbitalsorbit, orbital, atomic orbital, electron shell, subshell
duct, lacrimal apparatus, aqueduct, nasal, ductile, lachrymose, nasality, lacrimation, nasalized