Which option correctly describes the depth of a partial thickness burn?

• A. Dermis and epidermis
• B. Only epidermis
• C. Subcutaneous tissue
• D. Muscle

Answer: (A)

Partial thickness burns involve both the epidermis and part of the dermis. The epidermis is the outer protective layer, while the dermis contains nerves and blood vessels; when both layers are burned, you get blistering, moist red tissue, and significant pain. Burns limited to the epidermis are superficial and heal quickly, whereas injuries reaching subcutaneous tissue or muscle are full-thickness and require more extensive treatment. So, describing the depth as affecting the dermis and epidermis correctly captures the typical depth of a partial thickness burn. Healing generally occurs faster for superficial partial thickness (roughly 7–14 days) and can take longer if the deeper portions of the dermis are involved.