alleryStart learning →Between approximately what ages are the 20 deciduous (baby) teeth typically replaced by the 32 permanent teeth?
AAge 1 to 3
BAge 15 to 18
CAge 20 to 25
DAge 6 to 12
Answer & Solution
Correct answer: D. Age 6 to 12
1. A person has two sets of teeth, or dentitions, over a lifetime.
2. The 20 deciduous teeth, or baby teeth, first begin to appear at about 6 months of age.
3. Between approximately age 6 and 12, these deciduous teeth are replaced by 32 permanent teeth.
4. Age ranges of 1 to 3, 15 to 18, or 20 to 25 do not match the age window given for this replacement process.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 23 "The Digestive System", section 23.3, p. 1101_
Keep practising The Digestive System
Browse all The Digestive System questions for MBBS, or explore more Anatomy topics.
Related questions
Pop the alimentary canal organsAlimentary canal or accessory organ?The stomach's wider funnel-shaped region connecting to the duodenum has two parts. What isThe esophagus penetrates the diaphragm to enter the abdomen through which opening?In the crown of a tooth, the underlying dentin is covered by which substance, described asWhich peritoneal fold suspends the stomach from the inferior border of the liver and proviApproximately how long is the alimentary canal during life, before smooth muscle tone is l