PCOL 355 Module 3 questions with complete solutions

Which of the following is the correct regarding nonoxynol-9 (N-9)? CORRECT ANSWER has been shown to kill bacteria and viruses that cause STD's Which of the following provides the highest residence time (longest time for 50% drug clearance) in the nasal cavity? CORRECT ANSWER Chitosan Powder Which of the following is INCORRECT regarding mucociliary clearance/transport? CORRECT ANSWER rate of mucociliary clearance must be faster than the rate of drug absorption T or F: Gel systems in vaginal drug delivery are comprised of a solid polymer, liquid carrier, and drug, without the need of adding bioadhesive agents. CORRECT ANSWER False semi-solid polymeric matrices comprising small amounts of solid dispersed in relatively large amounts of liquid, yet possessing more solid-like character. T or F: The formation of aerosol droplets formed from nebulizer nozzles is driven by a reduction in pressure caused by flow through constricted area. CORRECT ANSWER True T or F: The spacer classes that are used with pMDIs are complex closed tube chamber, reservoir, and reversed flow. CORRECT ANSWER False made spacers to avoid the complex stuff T or F: Weber number, We, during nebulization is directly proportional to the nozzle diameter of the nebulizer. CORRECT ANSWER True