Countercurrent heat exchange, a circulatory arrangement in which warm blood leaving the body core passes cooler blood returning from the extremities, allows for heat to pass into regions where little warmth or heat mechanisms exist .
little warmth or heat mechanisms exist
little warmth or heat mechanisms exists
few heat mechanisms and little warmth exists
there is little warmth or heat mechanisms available
there are few heat mechanisms and little available warmth
OA E
little warmth or heat mechanisms exist
little warmth or heat mechanisms exists
few heat mechanisms and little warmth exists
there is little warmth or heat mechanisms available
there are few heat mechanisms and little available warmth
OA E
