He made an inconsiderate remark and hurt everyone.

I was really surprised by his inconsiderate behavior.

He is an expert in neurology.

He was studying with his nerves on edge the day before the exam.

His reflexes are very sharp.

When the sympathetic nerves are activated, the heart rate increases.

He lost consciousness due to the effects of nerve gas.

Vitamin D3 is an important nutrient for bone health.

Hypervitaminosis occurs when the intake of vitamins is too high.

The Solar System is composed of eight planets, including Earth.