Breathing is usually regulated by a. the hormones. b. CO2 and O2 concentration and pH-level sensors. c. the concentration of red blood cells. d. hemoglobin levels in the blood. e. Insulin levels in the blood. Where does the complete digestion of carbohydrates occur? a. stomach b. large intestine c. small intestine d. stomach and small intestine e. oral cavity
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\( \mathrm{CO} 2 \) and \( \mathrm{O} 2 \) concentration and \( \mathrm{pH} \)-level sensors. This is because the body needs to maintain a certain balance of these gases and pH levels for optimal function. Show more…
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Oxygen enters the blood in the lungs because relative to alveolar air: a. the $C O_{2}$ concentration in the blood is high. b. the $\mathrm{CO}_{2}$ concentration in the blood is low. c. the $\mathrm{O}_{2}$ concentration in the blood is high. d. the $\mathrm{O}_{2}$ concentration in the blood is low. e. the process is independent of gas concentrations in the blood.
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