Which germ layer is responsible for forming the brain, spinal cord, and sense organs?

The ectoderm is the germ layer responsible for forming the brain, spinal cord, and sense organs. It is the outermost layer of the three primary germ layers in early embryonic development. During the process of neurulation, a part of the ectoderm differentiates into the neural plate, which eventually folds to form the neural tube. The neural tube develops into the central nervous system, including the brain and spinal cord. Additionally, the ectoderm gives rise to various sense organs, such as the eyes and ears, and structures associated with the skin. This germ layer plays a crucial role in establishing the basic framework of the nervous system and sensory structures, highlighting its importance in early development.