The sarcoplasmic reticulum (SR) of skeletal muscle cells is a convoluted structure composed of a variety of tubules and cisternae, which share a continuous lumen delimited by a single continuous membrane, branching to form a network that surrounds each myofibril.
Percocet is the brand name for the drug combination of oxycodone hydrochloride and acetaminophen. It is classified as a semisynthetic pure opioid agonist medication used for relief of moderate to moderately severe pain.
An Overview of Percocet Withdrawal. PercocetÂ® (oxycodone/APAP) is a prescription pain medication. The medication is a narcotic, and you may experience withdrawal symptoms if you stop taking it too quickly, especially if you have taken it for more than a few weeks.