When muscles are deprived of oxygen, how do they respire?
  • Aerobically
  • Acidly
  • Acerbically
  • Anaerobically
What do muscle cells break down in order to release energy?
  • Protein
  • Glycogen
  • Cholesterol
  • Oxygen
Which of the following is the stored form of glucose, found in the liver and muscles?
  • Glucagon
  • Glucagen
  • Glycogen
  • Glycose
Which type of the blood vessel supplies blood to the muscles?
  • Lymph
  • Artery
  • Vein
  • Aorta
Which of the following is a waste product of muscles respiring anaerobically?
  • Oxygen
  • Ammonia
  • Lactic acid
  • Carbon monoxide
Which of the following statements is true of the blood leaving the muscles during exercise?
  • The blood leaving the muscles during exercise has more oxygen
  • The blood leaving the muscles during exercise has less water
  • The blood leaving the muscles during exercise has more carbon dioxide
  • The blood leaving the muscles during exercise has less nitrogen
The rate and depth of breathing increases during exercise. This is in order to give the muscles more of what?
  • More oxygen
  • More carbon dioxide
  • More glycogen
  • More nutrients
Blood supply to the respiring muscles increases during exercise. This is to supply the muscles with more of what?
  • More glucose
  • More carbon dioxide
  • More nitrogen
  • More water
Which type of the blood vessel removes blood from the muscles?
  • Artery
  • Aorta
  • Vein
  • Lymph
During exercise, what happens to the heart rate?
  • It decreases
  • It increases
  • It is unchanged
  • It decreases then increases
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