Pages in this set

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Surfaces for Exchange

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Inhaling (Inspiration) Exhaling (Expiration)
Diaphragm contracts to become flatter and Diaphragm relaxes and is pushed up by
pushes digestive organs down. displaced organs underneath.
External intercostal muscles contract to External intercostal muscles relax and ribs
raise ribs. fall.
Volume of chest cavity increases. Volume of chest cavity decreases.
Pressure in…

Page 4

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Tissues in the Lungs

Page 5

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Measuring Lung Capacity

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Transport in Animals

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Page 8

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The Mammalian Heart

Page 9

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The Cardiac Cycle

Page 10

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Controlling the Cardiac Cycle

Comments

agulfraz

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Fantastic resource, really good for the new linear Alevels, makes everything clear and not over complicated! :) 

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