New York University states that the effects of a lack of oxygen to the brain depend on severity but include difficulty paying attention, poor judgement, poor coordination, intense emotions and drowsiness. In more severe cases, the effects include seizures, loss of consciousness and difficulty breathing. If the brain goes without oxygen for more than four minutes, brain cells begin to die, and a further lack of oxygen can lead to death.Know More
According to New York University, many conditions can lead to a lack of oxygen to the brain. Any failure of the respiratory system, whether due to injury, toxins (such as carbon monoxide), drowning or smoke inhalation can reduce the amount of oxygen entering the blood and thus reaching the brain. Disruptions to blood flow, including the blockage or rupture of blood vessels or cardiac arrest can also keep oxygen from reaching to the brain.
New York University states that diagnosis of a lack of oxygen to the brain involves a number of different tests, but the most important factor is medical history. Tests include physical exams and blood analysis. If necessary, imaging scans of the cardiac or respiratory systems also occur. Monitoring of the activity of the heart or brain via electrocardiogram and electroencaphalogram can also be helpful. Treatments must focus on both the immediate lack of oxygen and the underlying conditions.Learn more about Nerves
The brain is protected by connected bony plates in the head known as the skull. It is also protected by the meninges, a three layer membrane.Full Answer >
The optic nerve, also called cranial nerve II or the second cranial nerve, is responsible for carrying images from the eyes to the brain. The transfer of visual information begins in the retina and travels to the brain's visual centers with the help of electrical impulses.Full Answer >
A fluid flows around the vestibular system, the section of the inner ear involved with balance, impinging on specialized sensory cells and generating signals that are used by the brain to determine the body's orientation, according to Wikipedia. The vestibular system is composed of the vestibule, a network of tubes known as the semicircular canals, otoliths and a structure called the cupula, which is home to the specialized sensory cells.Full Answer >
The brain is divided into three main parts: the forebrain, midbrain and hindbrain. The three parts work together, but they perform independent functions. The cerebrum is the largest part of the brain, and it fills most of the forebrain.Full Answer >