Akademik

a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance

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the tear duct was obstructed

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the alimentary canal

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poison is released through a channel in the snake's fangs

↑pore, ↑spinal canal, ↑vertebral canal, ↑canalis vertebralis, ↑ductule, ↑ductulus, ↑canaliculus, ↑canal of Schlemm, ↑Schlemm's canal, ↑sinus venosus sclerae, ↑venous sinus, ↑sinus, ↑lacrimal duct, ↑lachrymal duct, ↑tear duct, ↑nasolacrimal duct, ↑Haversian canal, ↑hepatic duct, ↑inguinal canal, ↑canalis inguinalis, ↑common bile duct, ↑bile duct, ↑pancreatic duct, ↑lymph vessel, ↑lymphatic vessel, ↑salivary duct, ↑cerebral aqueduct, ↑Sylvian aqueduct, ↑aqueductus cerebri, ↑ureter, ↑urethra, ↑cervical canal, ↑canalis cervicis uteri, ↑umbilical cord, ↑umbilical, ↑vagina, ↑epididymis, ↑vas deferens, ↑ductus deferens, ↑seminal duct, ↑ejaculatory duct, ↑cartilaginous tube, ↑bronchiole, ↑alimentary canal, ↑alimentary tract, ↑digestive tube, ↑digestive tract, ↑gastrointestinal tract, ↑GI tract, ↑lactiferous duct