From which embryonic structure develops the vertebral column
(a) Neural canal
(b) Archenteron
(c) Notochord
(d) Blastocoel

Options

A. Neural canal
B. Archenteron
C. Notochord
D. Blastocoel

Answer

To determine which embryonic structure develops into the vertebral column, we need to analyze each of the given options:

1. **Neural Canal**:
- The neural canal is located in the center of the neural tube, which is a precursor to the central nervous system (CNS), including the brain and spinal cord. However, it does not contribute to the formation of the vertebral column itself.
- **Conclusion**: This option is incorrect.

2. **Archenteron**:
- The archenteron, also known as the primitive gut, forms during gastrulation and is involved in the development of the gut. It does not play a role in the formation of the vertebral column.
- **Conclusion**: This option is incorrect.

3. **Notochord**:
- The notochord is a rod-like, flexible structure that is found in the embryos of chordates. It runs along the length of the body and is crucial for the development of the vertebral column, as it serves as a precursor to the vertebrae.
- **Conclusion**: This option is correct.

4. **Blastocoel**:
- The blastocoel is a fluid-filled cavity present in the blastula stage of embryonic development. It does not contribute to the formation of the vertebral column.
- **Conclusion**: This option is incorrect.

Based on the analysis, the correct answer is **(c) Notochord**.