Which one of the following structures is derived from the ectoderm?

A) gut lining
B) nervous system
C) lungs
D) bones
E) bladder lining

The nervous system is derived from the ectoderm layer during embryonic development. The gut lining is derived from the endoderm, the lungs are derived from the endoderm and mesoderm, the bones are derived from the mesoderm, and the bladder lining is derived from the endoderm.