Neural crtst cellls break off from the ____ and later move to the sides of the developing embryo to from_______

Options

A. Placodes, sense orgnas of head
B. Ectoderm, sense organs of head
C. Notochord , vertebral column
D. Neural tube , autonomic ganglia

Answer

**Step-by-Step Solution:**

1. **Identify the Origin of Neural Crest Cells:**
Neural crest cells originate from the neural tube during embryonic development. The neural tube is formed from the ectoderm layer of the embryo.

2. **Understand the Movement of Neural Crest Cells:**
After their formation, neural crest cells migrate away from the neural tube to various locations in the developing embryo.

3. **Determine the Final Destination of Neural Crest Cells:**
As neural crest cells migrate, they differentiate into various cell types, including those that form the autonomic nervous system. Specifically, they contribute to the formation of autonomic ganglia, which are clusters of nerve cell bodies.

4. **Fill in the Blanks:**
Based on the information above, the complete statement is:
"Neural crest cells break off from the **neural tube** and later move to the sides of the developing embryo to form **autonomic ganglia**."

**Final Answer:**
Neural crest cells break off from the **neural tube** and later move to the sides of the developing embryo to form **autonomic ganglia**.

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