[Solved] Which statement about the cerebral cortex is FALSE? A)It is visible to the naked eye. B)It is divided into two hemispheres. C)It contains the thalamus and hypothalamus. D)It is the outermost layer of the brain. Sodium Ions: Positively charged particles of sodium, essential in the body for maintaining cellular function, nerve impulses, and fluid balance. Anesthetic Drugs: Substances used to induce anesthesia, rendering the patient insensible to pain. Novocain: A synthetic compound used as a local anesthetic in medical and dental procedures; it is often substituted for safer and more effective anesthetics today. Sodium: A chemical element (Na) that is essential for life, involved in osmoregulation and nerve function.