The proper blood supply to the brain is essential for human life. The brain’s circulation requires approximately 750-800 milliliters of blood per minute, which represents 15-20% of the total circulating blood. The brain is extremely sensitive to interruptions in blood supply; if this supply completely stops, severe disturbances in brain function can occur within five seconds. If the blood supply is interrupted for more than three minutes, it generally leads to permanent damage, while interruptions lasting longer than six minutes can result in irreversible brain damage, also known as brain death. Blood Supply to the Brain The brain’s blood supply is realized through bilateral carotid arteries and vertebral arteries, which…