The fire alarm went off, so we immediately evacuated the building.

The International System of Units is a standard of measurement widely used around the world.

The SI system is a standard unit system used worldwide.

The parasympathetic nervous system helps our body to relax and conserve energy.

The sympathetic nervous system controls the body's stress response.

He had to have surgery because his nasal septum was deviated.

I have been to Cape Eluan.

She does exercises to strengthen her procerus muscle every day.

The International System of Units is a system of units commonly used worldwide.

He underwent surgery on the depressor septi nasi.