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Unformatted text preview: diaphragm moves __________ (up/down) rib cage ______________ (expands/contracts) volume of thoracic cavity _____________ (increases/decreases) air pressure in the lungs ______________ (increases/decreases) movement of air: Control of Breathing Breathing is under automatic regulation by the breathing control centers in the ________________& the ________________.-When _______ concentration increases, pH levels _____________ (increase/decrease) AS A RESULT, the ________ & ________ of breathing is ____________ (increased/decreased)- O 2 sensors in the ___________ & ____________ react to: QuickTime and a decompres or are ne ded to se this picture....
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- Spring '10