The control means includes means for monitoring the operation of the heart and for actuating {HEAD ~ the valves} to regulate {TAIL ~ fluid flow} to the second chamber in accordance with same 
to regulate
The control means includes means for monitoring the operation of the heart and for actuating { HEAD ~ the valves } to regulate { TAIL ~ fluid flow } to the second chamber in accordance with same
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH