Question 1
Decompression sickness ("the bends") is caused by
◦ a rapid rise of carbon dioxide in the blood.
◦ lack of oxygen in the tissues.
◦ bubbles of nitrogen in the blood.
◦ glucose deficiency.
◦ descending too rapidly into deep water.
Question 2
DPG (2,3
-diphosphoglycerate) is produced when
◦ carbon dioxide builds up.
◦ oxygen levels are high.
◦ tissues chronically receive too little oxygen.
◦ bicarbonate ion is low.
◦ sodium levels rise.