duct -
a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance; "the tear duct was obstructed"; "the alimentary canal"; "poison is released through a channel in the snake's fangs"
nasolacrimal duct a duct that carries tears from the lacrimal sac to the nasal cavity
haversian canal any of the many tiny canals that contain blood vessels and connective tissue and that form a network in bone
hepatic duct the duct that drains bile from the liver
canalis inguinalis,
inguinal canal oblique passage through the lower abdominal wall; in males it is the passage through which the testes descend into the scrotum and it contains the spermatic cord; in females it transmits the round ligament of the uterus
vagina the lower part of the female reproductive tract; a moist canal in female mammals extending from the labia minora to the uterus; "the vagina receives the penis during coitus"; "the vagina is elastic enough to allow the passage of a fetus"
epididymis a convoluted tubule in each testis; carries sperm to vas deferens