Neural tube formation occurs on___________?
Correct answer: A. 18 to 23 days post fertilization and is the second stage of craiofacial development
- A. 18 to 23 days post fertilization and is the second stage of craiofacial development
- B. 28 to 38 days post fertilization and is the third stage of craniofacial development
- C. 42 to 55 days post fertilization and is the fourth stage of craniofacial development
- D. 17 the day post fertilization and is the first stage of craniofacial development
Explanation
Neurulation begins around days 18 to 23 after fertilization, when the neural plate folds to form the neural tube. This is an early phase of craniofacial development, before later facial growth and differentiation.
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