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.
Percocet (a trade name of Endo Pharmaceuticals for a narcotic pain killer containing oxycodone and acetaminophe) is an analgesic, the ES refers to the Extra Strength formulatiâ¦on.