Upon {HEAD ~ removal} of lateral forces, {TAIL ~ the temple} automatically returns to its unbiased position 
Upon { HEAD ~ removal } of lateral forces , { TAIL ~ the temple } automatically returns to its unbiased position
OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH