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Skin Anatomy & Treatment Selection Flashcards

7 cards from real CLT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Skin Anatomy & Treatment Selection flashcards as text

  1. A laser technician is treating sebaceous hyperplasia. Which laser modality is most appropriate for this indication?

    Answer: CO2 10,600 nm ablative

    The ablative CO2 laser precisely vaporizes enlarged sebaceous glands while allowing controlled depth management.

  2. The basement membrane zone (BMZ) is clinically significant in laser treatments because it:

    Answer: Separates the epidermis from dermis and can be disrupted causing scarring

    The BMZ anchors the epidermis to the dermis; excessive laser penetration that disrupts it risks permanent scarring and pigment changes.

  3. What does 'thermal relaxation time' (TRT) refer to in laser physics?

    Answer: The time required for a target tissue to dissipate 50% of its absorbed heat

    TRT is the time for a heated target to lose 50% of its peak temperature; pulse duration should not exceed TRT for selective damage.

  4. Which skin condition characterized by excess collagen deposition extending beyond the wound boundary is most likely to occur in predisposed patients after aggressive laser resurfacing?

    Answer: Keloid

    Keloids extend beyond the original wound margins due to uncontrolled collagen overproduction and are more common in genetically predisposed individuals.

  5. A patient with melasma wants laser treatment. Which approach is considered safest to minimize risk of worsening?

    Answer: Low-fluence Q-switched Nd:YAG toning with multiple passes

    Low-fluence, multi-pass Q-switched Nd:YAG toning is the safest laser approach for melasma, minimizing heat-induced PIH flare.

  6. In skin histology, which cell type in the epidermis is responsible for transferring melanin to surrounding keratinocytes?

    Answer: Melanocyte

    Melanocytes produce melanin within melanosomes and transfer them via dendrites to surrounding keratinocytes for UV protection.

  7. Which of the following best represents the correct sequence of epidermal layers from deepest to most superficial?

    Answer: Basale → Spinosum → Granulosum → Lucidum → Corneum

    The epidermis progresses from stratum basale (deepest) through spinosum, granulosum, lucidum (only in thick skin), to corneum (most superficial).