The cover defines a dispensing orifice and defines an edge for severing at least part of {TAIL ~ the membrane} as the cover is moved from the outer position to {HEAD ~ the inwardly displaced position} 
The cover defines a dispensing orifice and defines an edge for severing at least part of { TAIL ~ the membrane } as the cover is moved from the outer position to { HEAD ~ the inwardly displaced position }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD