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.
The combination oxycodone/paracetamol (North American trade name Percocet, generic Endocet and Ratio-Oxycocet in Canada) is a combined opioid/non-opioid pain reliever used to treat moderate to severe acute (short-term) pain, marketed by Endo International plc, formerly Endo Pharmaceuticals. 1 History.