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.
The major draining ostia are the anterior ostiomeatal complexes (OMCs), which drain the bilateral frontal and maxillary sinuses and the anterior and middle third of the ethmoid sinuses, as seen in the following image. CT scan, nasal cavity.Normal anterior ostiomeatal complex anatomy.T scan, nasal cavity. This reformatted image of a normal sagittal reconstruction of the ostiomeatal complex shows the curved edge of the semilunar hiatus with the inferior mucosal edge covering the uncinate process. The frontal recess/duct is also shown.