Susan Suffered from a Heart Attack

question 44

Multiple Choice

Susan suffered from a heart attack.When the doctors tested the heart muscle they found that she had an increased ratio of lactic acid to pyruvic acid in her heart.What does this say about the availability of oxygen in her heart muscle cells?

• A) The heart cells must have received too much oxygen.
• B) The heart cells had not received adequate oxygen supply.
• C) The heart cells had a build up of carbon dioxide, poisoning her cells.
• D) The lactic acid built up as a result of cellular respiration occurring at too fast of a rate.
• E) The heart cells had too much carbon dioxide build up.