OXYGEN TRANSPORT SYSTEM

1
OXYGEN TRANSPORT SYSTEM
2
Oxygen

• In order to work and create movement, our muscles
  need oxygen.
• You body needs a regular supply of oxygen to stay
  alive.
• The working muscles need energy, which is
  supplied by oxygen.
• As an activity becomes more demanding the need
  for oxygen is greater.

3
How does oxygen reach the muscles?

• The lungs, heart, blood and muscles all play an
  important part in the oxygen transport system.
  The whole oxygen transport system works in a
  cycle.
• The respiratory system and the circulatory
  system work together to provide the muscles with
  oxygen this enables you to exercise.

4
THE RESPIRATORY SYSTEM

• Enables air to be inhaled (breathed in).
• When you breathe in, oxygen enters your lungs and
  is absorbed into your blood which is pumped
  around your body by your heart.
• The oxygenated blood allows the cells within your
  body to use energy to help you exercise so the
  muscles can produce movement.
• When your cells produce energy and the muscles
  use the oxygen up, a waste product called carbon
  dioxide is produced.
• The carbon dioxide is carried back to the lungs
  by the blood it is then removed from your body
  when you breathe out.
• Breathing is an automatic process (you do not
  think about it) it is controlled by the brain.

5
(No Transcript)
6
THE CIRCULATORY SYSTEM

• This system consists of the heart and the blood
  vessels.
• The heart is a pump, which pushes the blood
  through the vessels.
• The blood flows round the body in a continuous
  system.
• By contracting and relaxing the heart muscles can
  pump blood around the body.

7
(No Transcript)
8

• With an improved oxygen transport system, the
  body will be more able to cope with exercise. As
  a person becomes fitter, less effort is needed
  for the same amount of work.
• A regular programme of training will improve the
  efficiency of the heart and lungs.

9

• The size of the heart will increase. As a result
  the bodys pump will become bigger and so more
  blood can be pushed along the vessels per beat.
  There will be an increase in the number of red
  blood cells and therefore an increase in oxygen.
• MORE BLOOD MORE OXYGEN
• Regular exercise lowers the heart rate, the
  lower your heart rate the fitter you are. After
  exercise the fitter you are the quicker your
  pulse will return to normal levels

10

• The capacity of the lungs will increase which
  will give the body more oxygen with each breath.
  The more oxygen you can take into your lungs the
  greater your capacity will be for exercise.

11

• Question 1
• a) Why do we need oxygen?
• b) When we exercise which part of the body needs
  oxygen?
• c) What parts of the body are involved in the
  oxygen transport system?
• d) What two systems work together to produce
  oxygen for the muscles?

12

• Question 2
• What is the function of the respiratory system?
• What is the function of the circulatory system?
• What effects will an improved oxygen transport
  system have on the body?
• With regular training the efficiency of the heart
  and lungs will improve. What will happen to the
  heart and lungs?

13

• Question 3
• Fill in the gaps, words can only be used once.
• carbon dioxide lungs muscles
  oxygenated
• As we breathe, oxygen enters the . and is
  absorbed into the bloodstream. The heart pumps
  this . blood to the . to help produce
  movement. However, . is then produced and must
  be absorbed back to the blood, pumped to the
  heart then onto the lungs, before breathed out.

14

• Question 5
• Describe what happens in order for our muscles to
  get oxygen?
• What will happen if our muscles are not supplied
  with sufficient amounts of oxygen?
• With oxygen
• Without oxygen