Fentanyl is in a class of drugs called opioid analgesics, which work by binding to nervous system proteins called opioid receptors, thereby blocking the transmission of pain signals to the brain.Duragesic is a transdermal (through-the-skin) patch.entanyl skin patches are only used to treat people who are tolerant (used to the effects of the medication) to narcotic pain medications. Fentanyl is in a class of medications called opiate (narcotic) analgesics. It works by changing the way the brain and nervous system respond to pain.
Answers. Best Answer: 1 anisogamy (reproduction by the union or fusion of two differing gametes (especially differing in size) 2 Gonad is the generic term for either testes or ovaries 3 Gametes are haploid 4 Disease and disorders are passed on.
Common PCOS signs and symptoms include the following: â¢ Irregular menstrual periodsâMenstrual disorders can include absent periods, periods that occur infrequently or too. frequently, heavy periods, or unpredictable periods. â¢ Infertility âPCOS is one of the most common causes of female infertility. â¢ ObesityâUp to 80% of women with PCOS are obese.