Into this duct the ranks of cells around it pour out the peptic juice.
I reached the top of the duct and pushed against the slot cover.
I heard a muffled clank; then a hum began, echoing up the duct.
And there was that hazard here, for every duct looked like every other one.
The operator then carefully examines the duct preparatory to cutting it.
Openings of ureters ...