They are important for lung function, since their purpose is the exchange of oxygen and carbon dioxide. When the airways are blocked by a mucous plug, foreign object, or tumor, the alveoli are unable to fill with air and collapse of lung tissue can occur in the affected area.
Testing Positive for Marijuana Does Not Indicate Impairment Someone can test positive for marijuana days or even weeks after they last used it. by Dr. Carl Hart @drcarlhart. AAs Oregonians consider their vote on tax and regulation of marijuana, it is important for them to have access to sound information grounded in science.
Or how long does marijuana stay in your system if you smoked for the first time are questions we get daily.o one can really say how long you will test positive for marijuana, since the rate of THC metabolism varies per individual. But there are some common guidelines. According to experts at WebM, the amount of time marijuana stays in your system is anywhere from a week to a month, depending on how often you use it.