B2: The effect of exercise on the body

• Muscle tissue made up of protein fibres (contract when supplied with energry from respiration)
  • Contain many Mitochondria to carry out aerobic respiration and supply energy needed

• Muscle fibres occur in groups known as muscles - contract to cause movement & relax allows other to work too

• Also store glucose as the carbohydrate glycogen
  • Glycogen converted back to glucose to use during exercise
  • The glucose used in aerobic respiration to provide energy to make muscle contract 

The Response to exercise:

• When not…