Response to exercise

• What activity increases osteoclast activity?

  Weight-bearing exercise
• How does synovial fluid change with exercise?

  Increases in amount and reduces in viscosity
• What are the types of muscle fibers involved in muscle fiber recruitment?

  • Type I (slow twitch)
  • Type IIA (fast twitch)
  • Type IIX (fast twitch)
• What happens to blood flow during exercise?

  It increases in working muscles
• What do micro-tears in muscles result from?

  Exercise
• What happens to temperature in working muscles during exercise?

  It rises
• What controls breathing rate?

  Chemical and neural mechanisms
• What are the respiratory muscles involved in breathing?

  • Diaphragm
  • Intercostals
• What is tidal volume?

  Amount of air inhaled or exhaled per breath
• How is minute volume (VE) calculated?

  VE = Breathing Rate × Tidal Volume
• What does the oxygen dissociation curve show?

  Relationship between oxygen saturation and partial pressure of oxygen
• What is anticipatory heart rate influenced by?

  Adrenaline
• What is cardiac output (Q) influenced by?

  Stroke volume (SV) and heart rate (HR)
• What does Starling's Law relate to?

  Cardiac output
• How does blood pressure change with different types of exercise?

  It varies with aerobic and strength training
• What is the cardiac cycle?

  Sequence of heart events during one heartbeat
• How is blood flow redistributed in the body?

  Through vasoconstriction and vasodilation