CNA Practice Test
Body systemsQuestion 1688 of 1700

What does multiple sclerosis attack?

  1. The pancreas cells that make insulin
  2. The thyroid gland in the neck
  3. The lungs and the airways
  4. The covering that protects the spinal cord
Show answer

Correct answer: The covering that protects the spinal cord

Damage there disrupts signals from the brain to the body.

Source: Nursing Assistant (Reuter), 11.9: Immune System

Practice body systems

Questions last reviewed: 18 October 2026