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Pharmaceutics Exam 4 (126 Questions) multiple choice with verified solutions

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Pharmaceutics Exam 4 (126 Questions) multiple choice with verified solutions












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Pharmaceutics Exam 4 (126
Questions) multiple choice
with verified solutions

Which of the following is not a pharmaceutical semisolid?
|||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




A. Ointment
||||||




B. Cream
||||||




C. Foam
||||||




D. Tablet
||||||




E. None of the above - correct answer ✔Answer: D
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Explanation: I hope you know that tablets are solids. Other semisolids include pastes, gels, and
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




suppositories



What dosage form is incorrectly paired with a route of application?
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




A. Suppository : Body cavity
|||||| |||||| |||||| ||||||




B. Nasal : Skin Surface
|||||| |||||| |||||| ||||||




C. Dermal : Skin Surface
|||||| |||||| |||||| ||||||




D. Ophthalmic : Mucous Membranes - correct answer ✔Answer: B
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Explanation: Nasal drugs are applied to mucous membranes. |||||| |||||| |||||| |||||| |||||| |||||| ||||||

,Which of the following are effects we want to elicit when applying a semisolid to the skin?
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




A. Effect on the skin surface (protective film)
|||||| |||||| |||||| |||||| |||||| |||||| ||||||




B. Effect within the stratum corneum layer (reservoir or depot effect)
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




C. Deep-seated effect requiring penetration into the epidermis and dermis
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




D. Systemic effect
|||||| ||||||




E. All of the above - correct answer ✔Answer: E
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Explanation: This is true. |||||| |||||| ||||||




What is the preferred method of delivery of a drug through the skin?
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




A. Through the epidermis (diffusion)
|||||| |||||| |||||| ||||||




B. Along hair follicular ducts and sweat glands - correct answer ✔Answer: A
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Explanation: While moving along hair particles bypasses the stratum corneum, there is very little |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




area of pores/hair for distribution (much lower proportion than the skin as a whole).
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Which of the following are examples of dermatological factors that affect delivery of topical drugs?
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




A. Absorption/penetration
||||||




B. Emollient properties of the drug
|||||| |||||| |||||| |||||| ||||||




C. Freedom from irritant effect
|||||| |||||| |||||| ||||||




D. Ease of application/removal
|||||| |||||| ||||||




E. All of the above - correct answer ✔Answer: E
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Explanation: These all affect drug delivery. Other examples of factors include the Effect on skin |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




function and Miscibility/compatibility with skin secretions.
|||||| |||||| |||||| |||||| ||||||

,What biological factor does not significantly affect dermal penetration?
|||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




A. Old skin age
|||||| |||||| ||||||




B. Blood flow
|||||| ||||||




C. Skin metabolism
|||||| ||||||




D. Skin hydration
|||||| ||||||




E. Skin pH - correct answer ✔Answer: A
|||||| |||||| |||||| |||||| |||||| |||||| ||||||




Explanation: While skin does change with old age, it does not appear to affect drug delivery |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




significantly. However, skin function is reduced in young children (SA to body ratio is high). |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Temperature of skin also affects penetration. |||||| |||||| |||||| |||||| ||||||




True/False: Dermal drug delivery is an excellent alternative route of administration for geriatric
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




patients. - correct answer ✔Answer: True |||||| |||||| |||||| |||||| ||||||




Which of the following are physicochemical factors tgat ubfkyebce dernak oebetratuib - correct
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




answer ✔I'm sorry, I am so tired |||||| |||||| |||||| |||||| |||||| ||||||




Which of the following are physicochemical factors that influence dermal penetration?
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




A. Partition coefficient/lipophilicity
|||||| ||||||




B. Drug concentration
|||||| ||||||




C. Molecular size
|||||| ||||||




D. Excipients (Base, penetration enhancers)
|||||| |||||| |||||| ||||||




E. All of the above - correct answer ✔Answer: E
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Explanation: This is the truth |||||| |||||| |||||| ||||||




What is not an ideal physical property of a semisolid?
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||

, A. Smooth texture
|||||| ||||||




B. Non-dehydrating
||||||




C. Greasy
||||||




D. Non-gritty
||||||




E. None of the above - correct answer ✔Answer: C
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Explanation: A non-greasy product is preferred. Other ideal properties are an elegant appearance |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




and non-hygroscopic, they are non-irritating, do not alter membrane/skin function, are miscible
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




with skin secretion, are easily applicable w/ good drug release, and are water washable.
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Which of the following is not an advantage of a semisolid?
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




A. Avoidance of first-pass metabolism
|||||| |||||| |||||| ||||||




B. Provide a lubricating effect
|||||| |||||| |||||| ||||||




C. Dose accuracy
|||||| ||||||




D. Easily spreadable on skin
|||||| |||||| |||||| ||||||




E. All of the above - correct answer ✔Answer: C
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Explanation: These drugs are difficult to dose accurately. Other advantages include persisting at the |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




site of application (can be used on hemorrhoids and eyelids), Convenient for a patient with
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




difficulty swallowing, and are opaque (sunblock) |||||| |||||| |||||| |||||| ||||||




Which of the following is a disadvantage of a semisolid?
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




A. Drugs of larger particle size are not easy to absorb through the skin
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




B. These are bulky to handle
|||||| |||||| |||||| |||||| ||||||




C. They may cause staining
|||||| |||||| |||||| ||||||




D. Skin irritation can occur
|||||| |||||| |||||| ||||||




E. All of the above - correct answer ✔Answer: E
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||

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