Brain is situated inside a bony cranium (a part of skull). Inside cranium brain is covered by three layers called meninges. Function of meninges:- Meninges protect brain. It provide oxygen and nutrient to brain tissue through blood capillaries. Correct Answer Brain is situated inside a bony cranium (a part of skull). Inside cranium brain is covered by three layers called meninges. Function of meninges:- Meninges protect brain. It provide oxygen and nutrient to brain tissue through blood capillaries.