29. Is lactic acid a fuel or a caustic waste product?A fuel.
30. Where in our body is lactic acid produced? 31. Why can trained athletes perform so hard and so long? 32. Who is the professor at the University of California, studying lactic acid in human muscles? 33. Describe the experiment, in the early 20th century, by Nobel laureate, Otto Meyerhof, that seemed to support the idea that lactic acid causes muscle fatigue. He cut a frog in half and put its bottom half in a jar. The frog's muscles had no circulation — no source of oxygen or energy. He then gave the frog's leg electric shocks to make the muscles contract, but after a few twitches, the muscles stopped moving. Then, when Dr. Meyerhof examined the muscles, he discovered that they were bathed in lactic acid. Then he had developed a theory: lack of oxygen to muscles leads to lactic acid, leads to fatigue. 34. What did Dr. Brooks give his experimental rats? What happened? What is his conclusion? 35. Through trial and error, coaches learned that athletic performance improved when athletes worked on endurance. Working on endurance increases the mass of what muscle cell organelle? What will this organelle then do with lactic acid? 36. What effect does this have on muscles?
- Fall '14
- Jessica Johnson
- Glycolysis, Adenosine triphosphate