Greenish urine can mean that you have a urinary tract infection but if it's bright green, it can mean that you have too much of B vitamins. Certain drugs and some health conditions can cause urine to turn green, too, so mention this to your health care professional.
Alcohol does this by interacting with the receptors on the receiving cells in these pathways. Alcohol affects various centers in the brain, both higher and lower order. The centers are not equally affected by the same BAC -- the higher-order centers are more sensitive than the lower-order centers. As the BAC increases, more and more centers of the brain are affected. The order in which alcohol affects the various brain centers is as follows: Cerebral cortex.
Alcohol, and the effects of alcohol on memory and general cognitive functioning, has been the subject of much research over the years. Alcohol acts as a general central nervous system depressant, but it affects some areas of the brain more than others.