The esophagus is prevented from collapsing by rings of cartilage.
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Q2: The alimentary canal has two openings to
Q3: The esophagus is anterior to the trachea.
Q4: Periodontitis is a type of tooth decay
Q5: The function of the digestive system is
Q6: After food is digested,it enters the alimentary
Q8: The lesser curvature is located on the
Q9: The intrinsic muscles of the tongue are
Q10: The hard palate is fashioned of muscle
Q11: Gingivitis is the general term for inflammation
Q12: There are normally 20 deciduous teeth,also known
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