Respiration Breathing!

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RespirationBreathing!

• How we work, play and sleep!!

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Ingredients for energy!

• Weve learned in digestion that food is absorbed
  into our blodstream and carried around to all the
  cells in our body!
• The process that releases energy from this food
  is RESPIRATION.

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Respiration is the release of energy from food.

• The equation for respiration in words is
• Glucose Oxygen Carbon dioxide
  Water Energy

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There are two types of Respiration
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• Aerobic Respiration needs oxygen to release
  energy from food.

Come on Oxygen I need you to release energy!
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• Anaerobic Respiration does not use oxygen to
  release energy from food.

Sorry mate dont need you Im going in for
Anaerobic Respiration!
Sniff..I Feel so unwanted!
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How does Oxygen get to our Cells??

• Oxygen is carried by blood to all cells of the
  body.

This Is great were just hitching a ride to the
cells on these red blood cells!
Here we come!
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Aerobic Respiration

• Takes place in ALL the living cells in the body
  aswell as in most animal and plant cells.

We all respire Aerobically!
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Anaerobic Respiration

• Some living things can get energy from food
  without using oxygen.

Haha I dont need oxygen to respire I can do it
Anaerobically and still release energy!!
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Remember!

• Much less energy is released from food by
  Anaerobic Respiration than by Aerobic
  Respiration.

I miss Oxygen, I just cant give off all my
energy without him!
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Examples of anaerobic respiration

• Yeast converts sugars to alcohol in
  Fermentation this produces alcohol for drinks
  such as beers and wine!

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See for yourself!!!

• Have you ever noticed what happens when you
  breathe on glass??
• Yes as you can see from your experiment water
  vapour forms on it!
• We can make sure this is water by using cobalt
  chloride paper!

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Did you know ???

• When you get a cramp whilst exercising it is
  caused by the acid that your cells produce when
  they respire anaerobically (without oxygen).
• the only reason they do this is because your
  body needs to produce so much energy while you
  exercise that not enough oxygen reaches the cells
  on time.
• To try to sort this out you start breathing fast
  and get out of breath as your lungs are trying to
  take in as much oxygen as possible!!

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Now to test for Carbon Dioxide!

• Limewater turns cloudy in the presence of Carbon
  Dioxide.
• What happened when you breathed into limewater??
• What does this tell you??

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That brings us nicely on to..

• The breathing systemhow we take in oxygen and
  deliver it to cells!

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Breathing

• As you can see from the Equation Oxygen and food
  are the two important things our cells need to
  give us energy.
• Weve learned how the food gets to our cells by
  digestion.
• The oxygen gets to our cells by breathing!

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So where does the air go when we breathe it in?
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So what happens in each part??
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Nose and mouth

• These are the openings the air can enter through!

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Pharynx

• This is the scientific name for your throat area.

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Trachea

• This is the tube that leads into your lungs.
• It is very strong and is kept open by Rings of
  Cartilage.
• If we didnt have rings of cartilage what do you
  think might happen??

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Bronchus

• As we have two lungs our Trachea divides to
  branch into each one.
• These two branches are called Bronchi.

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How do you think the Bronchi fill up all our
lungs??
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Bronchioles

• To spread out through all our lungs the bronchi
  break up to even smaller little branches called
  BRONCHIOLES.

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Alveoli

• The final place the air we breathe in goes to in
  our lung is the ALVEOLI.

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• It is in the Alveoli that Carbon Dioxide is
  brought into the lungs to be exhaled and oxygen
  is brought into the body for respiration.
• This is called Gas exchange. Why do you think it
  is called this?

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• These are tiny little sacs that look like bunches
  of grapes.

By gosh!These things look just like a bunch of
grapes!
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• In fact this is how they got the name Alveolus
  from the Greek word meaning bunch of Grapes!

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• Tiny, tiny blood vessels known as capillaries
  carry blood to and from the alveoli and allow the
  gases to pass in and out.

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Did you know??

• If you joined all the capillaries in your lung
  alone end to end they would travel up and down
  Ireland a few times!!!

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Another amazing fact!

• If you took out you alveoli and cut them open to
  spread out they would cover a tennis court!!

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Lets Learn how we breathe!!
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See for yourself!

• Put your hands under your ribs.
• Take a deep breath in.
• What do you notice happening??
• This called the INHALE.

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• Keep your hands under you ribs as you breathe
  out.
• What do you notice happening?
• This is called the EXHALE.

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So whats going on??

• Our rib cage is around our lungs to protect them.
• When we take in air the rib cage seems to lift up
  to give more room for all the air.

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• This is able to happen because the INTERCOSTAL
  MUSCLES contract between the lungs and the
  DIAPHRAGM pushes up and down.

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We can also see this with the bell jar!!
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