Which of the following is true of the opioid fentanyl? It is used primarily in conjunction with surgical anesthesia. It is found in the brain tissues and have potent psychoactive effects. It stimulates the brain area controlling nausea and vomiting. It makes the respiratory centers less responsive to carbon dioxide levels in the blood.

It is used primarily in conjunction with surgical anesthesia.

Explanation:

Fentanyl opioid is an injectable or orally applied medication used to treat pain or used in anesthesia. Its effect occurs very fast providing the quick aliveio of the pain the loss of sensation of the anesthetized place, generally in about an hour or two.

Despite having a great medicinal value, this medication is highly dependent and can leave those who consume it quickly addicted and causing serious damage to your body, even leading to death.

This medication should not be used without a doctor's prescription. It can cause drowsiness, nausea, constipation, pressure drop, addiction, respiratory depression, among others.

Answer: it is used primarily in conjunction with surgical anesthesia

Explanation: it is one of the synthetic opioid, it is used intravenously as anesthesia and to treat pain. It is given with a muscle relaxant and a sedative hypnotic. The effect is quick in the body and central nervous system and can last less than 2 hours.