Q&A
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Name the structures in the lungs that help gas exchange | Large surface area / thin capillary walls / moist surface / extensive network of blood vessels
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| Name the muscle that contract during inspiration | External intercostals muscles
diaphragm
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| Name the muscles that aid expiration during exercise | Internal intercostal muscles
abdominals
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| What is tidal volume? | The air breathed in or out per breathe
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| How does breating rate increase? | Tidal volume increases by utilizing the expiratory and inspiratory reserve volumes / breathing rate increases
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| What is the purpose of residual volume? | Air that remains in the lungs after max expiration and stops lungs from collapsing
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| What is the equation for minute ventilation(VE) | VE= Tidal volume x breathing rate
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| What happens to minute ventilation during sub maximal exercise? | It will increase then plateau as demand for oxygen is being met by ventilation rate
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| What happens to inspiratory reserve volume during exercise | It reduces to allow tidal volume to increase
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| What happens to expiratory reserve volume during exercise | It reduces to allow tidal volume to increase
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| What sends messages to the brain to increase breathing rate? | Chemoreceptors, proprioceptors and thermoreceptors
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| What nerves are used to increase breathing rate | phrenic and intercostal muscles
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| What do the accessory muscles do? | Lift the ribcage higher to allow more air to be taken into the lungs
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| What do the internal intercostal muscles and abdominals muscle do during exercise? | Contract and pull the ribcage down quickly which allows the frequency of breathing to increase.
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Created by:
Tina Dean
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