The nurse is describing how oxybutynin exerts its effect to a client receiving it as treatment for overactive bladder. An understanding of which receptor would the nurse integrate into the description?

A. Dopamine receptors: Dopamine receptors are involved in the regulation of movement and mood but are not the primary receptors affected by oxybutynin. B. Beta adrenergic receptors: Beta adrenergic receptors are involved in smooth muscle relaxation, but oxybutynin targets the muscarinic receptors. C. Muscarinic receptors: Oxybutynin works by blocking muscarinic receptors in the bladder, thereby reducing overactive bladder symptoms like urgency and frequency. D. Alpha adrenergic receptors: These receptors are involved in vasoconstriction and are not the primary target of oxybutynin.