Respiratory System Physiology
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| Model lung. In internal volume of the bell jar (thoracic cage) | Diaphragm pushed up decreased and diaphragm pulled down increased
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| Model lung. In internal pressure | Diaphragm pushed up increased and diaphragm pulled down decreased
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| Model lung. In the size of the balloons (lungs) | diaphragm pushed up decreased and diaphragm pulled down increased
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| Under what internal conditions does air tend to flow into the lungs? (observation of model lung) | increase in thoracic volume, decrease in pressure
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| Under what internal conditions does air tend to flow out of the lungs? Explain why this is so. (observation of model lung) | decrease in thoracic volume, increase in pressure. Gases move in the direction that tends to equalize pressure inside and outside the container.
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| Volume of air present in the lungs after a forceful expiration. (respiratory volume term and normal value) | residual volume (1100ml)
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| volume of air that can be expired forcibly after a normal expiration. (respiratory volume term and normal value) | expiratory reserve (1200ml)
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| Volume of air that is breathed in and out during a normal respiration (respiratory volume term and normal value) | tidal volume (500ml)
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| Volume of air that can be inspired forcibly after a normal inspiration. (respiratory volume term and normal value) | inspiratory reserve (2700-2800ml)
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| Volume of air corresponding to TV + IRV + ERV. (respiratory volume term and normal value) | vital capacity (4800ml)
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| Where are the neural control centers of respiratory rhythm? | Medulla oblongata and pons
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