13. Which of the following muscles are responsible for regulating the movement of foods into the stomach? a) Cardiac sphincter b) Pyloric sphincter c) External intercostals d) Internal intercostals e) Diaphragm 14. Which of the following results in exhalation? a) The pressure in the lungs is less than the atmospheric pressure b) The pressure in the lungs is greater than the atmospheric pressure c) The pressure in the lungs is equal to the atmospheric pressure d) The diaphragm and the intercostals contract, decreasing the chest cavity volume e) b) and d)

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