1 The study process for the exam led to a broader knowledge base, a brush-up on familiar topics and an education on new aspects of the ASC industry.  The continuing education requirement to keep the credential up to date encourages CASC achievers to stay current on ASC issues.
Effects. Like heroin, morphine, and other opioid drugs, fentanyl works by binding to the body's opiate receptors, highly concentrated in areas of the brain that control pain and emotions.ike heroin, morphine, and other opioid drugs, fentanyl works by binding to the body's opiate receptors, highly concentrated in areas of the brain that control pain and emotions.
How fentanyl works. Like morphine, heroin, and other opioids, fentanyl binds to the body's opiate receptors, which are highly concentrated in areas of the brain associated with pain and emotions. This drives up dopamine levels and produces a state of euphoria and relaxation.