What is the first threat to life from a massive third-degree burn?
dehydration
unbearable pain
loss of immune function
infection
The Correct Answer is A
A. dehydration: Massive third-degree burns destroy the skin barrier, allowing significant fluid loss through evaporation. This leads to hypovolemic shock, which is the most immediate and life-threatening concern after a severe burn.
B. unbearable pain: Third-degree burns often destroy nerve endings in the affected area, so pain may be minimal at the burn site itself. Pain is distressing but not the first life-threatening issue.
C. loss of immune function: Severe burns compromise the skin’s protective role, increasing susceptibility to infection. However, immune compromise develops over hours to days, making it a secondary threat compared to fluid loss.
D. infection: Infection is a major risk in burn patients due to the loss of the protective barrier, but it typically develops later. Immediate fluid loss poses a more urgent threat to life in the first hours following the burn.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum:This order goes from deepest to superficial. A needle would pierce the layers from superficial to deep, so this sequence is reversed.
B. stratum corneum, stratum granulosum, stratum spinosum, stratum basale:The epidermis is pierced from the outermost layer inward. The stratum corneum is the outer protective layer, followed by the stratum granulosum, stratum spinosum, and finally the stratum basale, which rests on the dermis.
C. stratum granulosum, stratum basale, stratum spinosum, stratum corneum:This order is not sequential either from superficial to deep or deep to superficial, so it does not represent the correct pathway for a needle entering the skin.
D. stratum basale, stratum spinosum, stratum granulosum, stratum corneum:This order lists the layers from deep to superficial, the opposite of how a needle would penetrate the epidermis.
Correct Answer is B
Explanation
A. metaphase plate:The metaphase plate is the imaginary plane in the middle of the cell where chromosomes align during metaphase. It does not involve actin filaments or the separation of daughter cells.
B. cleavage furrow:The cleavage furrow is formed by a contractile ring of actin filaments that tightens to constrict the cell membrane. This process physically separates the cytoplasm, resulting in two distinct daughter cells during cytokinesis.
C. mitotic spindle:The mitotic spindle is composed of microtubules that attach to chromosomes and move them during mitosis. It functions in chromosome segregation, not in the physical pinching of the cytoplasm.
D. centrosome:The centrosome is the microtubule-organizing center that helps form the mitotic spindle. While crucial in mitosis, it does not participate in the contraction needed for cell cleavage.
E. centromere:The centromere is the region where sister chromatids are attached and where spindle fibers connect during chromosome separation. It plays no role in the actin-driven division of the cytoplasm.
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