You can see this at play with the hot dog: the sandwich and sausage were both invented elsewhere, so to celebrate them separately as uniquely American on America's day of independence would present an empty gesture, immediately undermined by the tools used to make it.
An Ommaya reservoir is an intraventricular catheter system that can be used for the aspiration of cerebrospinal fluid or for the delivery of drugs (e.g. chemotherapy) into the cerebrospinal fluid.n Ommaya reservoir is an intraventricular catheter system that can be used for the aspiration of cerebrospinal fluid or for the delivery of drugs (e.g. chemotherapy) into the cerebrospinal fluid.
omasoabomasal orifice. large, oval opening at the end of the omasal canal which communicates with the abomasum. oviductal orifice. a slit-like opening in the avian urodeum. pyloric orifice. aperture between the stomach and duodenum; opens infrequently, solely for the passage of ingesta. ureteric orifice. paired orifices in the neck of the bladder.