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.
PercocetÂ® (oxycodone/APAP) is a prescription pain medication. It contains acetaminophen (also known as TylenolÂ® and often abbreviated as APAP) and oxycodone, an opiate narcotic. Percocet is quite likely to cause constipation due to the narcotic component. Although you may be able to avoid this side effect if you take Percocet for just a few days (or if you only take it now and then), most people who take the drug will develop some degree of constipation.