Each of the Following Is a Derivative of Ectoderm EXCEPT

question 21

Multiple Choice

Each of the following is a derivative of ectoderm EXCEPT one.Which is the EXCEPTION?

• A) Tooth enamel
• B) Tooth dentin
• C) Epidermis
• D) Nervous system

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Definitions:

Hallucination

A perception in the absence of external stimulus that has qualities of real perception, often seen in psychiatric conditions like schizophrenia.

Delusion

A strongly held belief that is clearly in contradiction with reality, often indicative of a psychological disorder.

Suspicion

The feeling or belief that someone is guilty of an illegal, dishonest, or unpleasant action without certain proof.

Obsession

A persistent, intrusive, and unwanted thought or urge that causes anxiety or distress.