Lack of oxygen in the brain will cause permanent brain damage in as little as four minutes. Another four to six minutes without the brain receiving blood will result in increased brain damage, coma and then death. In order to reduce the chances of permanent or anoxic brain damage in a person who is unconscious, CPR should be performed until their breathing and heartbeat return or until qualified medical help arrives.Know More
The primary causes that result in an adult not breathing or having a heartbeat are accidents and injuries, excessive bleeding, infection in the bloodstream, near-drowning, drug overdose and abnormal hearth rhythms, and heart attacks that are associated with heart disease. Health issues or accidents such as choking, suffocation, drug use, carbon monoxide poisoning from malfunctioning gas appliances, electrical shock and heart arrhythmia can increase the chances of losing consciousness, which can result in anoxic brain damage.
If a person receives mild to moderate hypoxic brain damage from experiencing any of these conditions and is resuscitated, they may end up suffering from symptoms such as seizures, confusion, headaches, decreased attention span and concentration, poor coordination, occasional loss of consciousness and personality changes or mood swings.
Evidence of brain damage in individuals is detected by running tests such as MRIs, Head CT scans and SPECT scans. Symptoms associated with decreased brain function do not always show up right away and may not appear until several days or weeks after the experience occurred.Learn more about Organs
Indiana University explains that gyri and sulci, which comprise the wrinkled surface of the brain, are an adaptation that allows the brain to have more surface area. This is important because the internal volume of an animal’s skull limits the size of its brain. By developing a greater amount of surface area, the brain can contain more neurons, despite the limits to its volume, which are imposed by the skull.Full Answer >
The hypothalamus, which is a portion of the brain, controls the regulation of body temperature. The process that allows the human body to maintain its core temperature is called thermoregulation.Full Answer >
The part of the brain that controls consciousness is the frontal lobe. Other activities controlled by the frontal lobe include problem solving, decision making, emotions and control of purposeful behaviors.Full Answer >
Lack of oxygen to the brain causes cerebral hypoxia. The National Institute of Neurological Disorders and Stroke, or NINDS, explains that in this condition there is decreased oxygen supply to the brain although the blood flow remains sufficient. Symptoms of mild cerebral hypoxia are memory loss, poor motor coordination, poor judgment and inattentiveness.Full Answer >