Assignment 5 - Assignment 5 Ch 24 1 C the animals blood to...

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Assignment 5 Ch. 24 1. C the animal’s blood to be continually exposed to water of higher oxygen concentration 2. B increase the surface area available for gas exchange 3. A energy need for different vertebrate classes increase 4. C fish 5. C it takes three cycles of breathing for air to pass through the bird’s respiratory system. 6. B contracting your abdominal muscles forces the chest cavity outward 7. A hemoglobin in red blood cells 8. B as bicarbonate in the blood plasma 9. A bicarbonate 10. D all of the above 1. If you push up rapidly on the diaphragm and compress the lungs, the air that was in the lungs must go someplace. Its only choice is to push up through the trachea and try to escape through the mouth and nose. Since the trachea is being pinched closed by the food in the esophagus, the strong blast of air coming up the trachea from the lungs can sometimes bump into the stuck place with enough force to shove the food back into the throat and out the mouth. It often takes several
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