Question

question 4 (0.5 points) listen what failure in neurulation leads to neural tube defects like spina bifida? loss of neural crest cells open ends of the neural tube not closing failure of telencephalon to form disappearance of the pharyngeal arches

Explanation:

Neural tube defects such as spina bifida arise during embryonic development when the neural tube, which forms the brain and spinal cord, does not fully close. The posterior (lower) end of the neural tube failing to close causes spina bifida. The other options are unrelated: neural crest cell loss affects other structures, telencephalon formation is linked to brain development, and pharyngeal arches relate to head/neck structures.

Answer:

Open ends of the neural tube not closing