respiration

• aerobic respiration

  a form of respiration that uses oxygen to release energy from molecules like glucose
• aerobic respiration word equation

  glucose + oxygen —> carbon dioxide + water
• anaerobic respiration

  a form of respiration that releases energy from molecules like glucose without using oxygen
• anaerobic respiration word equation

  glucose —> lactic acid
• cellular respiration

  an exothermic reaction which is continuously happening in living cells
• limiting factor

  a factor that limits the rate of a reaction when there is not enough of it
• oxygen debt

  the amount of extra oxygen the body needs after exercise to react with the accumulation of lactic acid and remove it from the cells
• Bronchioles lead to Alveoli ( air sacs) where gas exchange happens

  • Alveoli are thin for rapid diffusion
  • Alveoli are surrounded by lots of capillaries to carry oxygen away
  • Alveoli have a very large surface area
  • Alveoli are moist for rapid diffusion
• Order of inhalation

  • mouth
  • trachea
  • bronchus
  • bronchioles
  • Alveoli
• • Anaerobic respiration means without oxygen.
  • muscles become low in oxygen under stress
  • makes less energy than aerobic respiration but continues to release energy without oxygen
  • produced lactic acid with causes muscle fatigue
• lactic acid

  • poisonous
  • builds up in muscles during anaerobic exercise
  • lactic acid is sent to the liver where it must be broken down
  • the breakdown requires oxygen, this is called the oxygen debt
• respiration is needed for the body to produce energy and complete daily tasks
• • inhalation and exhalation happens because The diaphragm contracts
  • this means that the pressure on the lungs changes either pushing air out or allowing air in