Direction of fusion of neural folds during formation of neural tube is:: (A) Caudal, (B) Cranial, (C) Both of the above, (D) None of the above
Answer is C. Gradually, the neural folds approach each other in the midline, where they fuse. Fusion begins in the cervical region (fifth somite) and proceeds cranially and caudally. As a result, the neural tube is formed. Ref: Langman's embryology 11th edition Chapter 6.