Which of the following structures is not of ectodermal origin_______________?
Correct answer: B. Enamel spindles
- A. Hunter schreger bands
- B. Enamel spindles
- C. Enamel tufts
- D. Enamel lamellae
Explanation
Enamel spindles are extensions of odontoblast processes that cross the dentinoenamel junction, so they are mesodermal in origin rather than ectodermal. The other listed structures are formed within enamel by ameloblast-related activity.
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