A scar is left after the healing process in a vital organ. Which outcome would you expect?
it results in permanent loss of function of the involved area
vital organs do not heal by scar tissue
it makes the organ larger than it originally was and increases function overall
the presence of scar tissue causes pressure necrosis of the surrounding area
The Correct Answer is A
A. it results in permanent loss of function of the involved area: Scar tissue is collagenous and non-functional compared with the original specialized tissue (e.g., myocardial scar after infarct), so the involved area usually has permanent loss of its original function.
B. vital organs do not heal by scar tissue: Many vital organs (heart, kidney, lung) heal by scarring when regeneration is incomplete.
C. it makes the organ larger than it originally was and increases function overall: Scars typically reduce functional tissue and do not increase organ function; any change in size is usually due to remodeling, not improved function.
D. the presence of scar tissue causes pressure necrosis of the surrounding area: Scar tissue may alter mechanics or blood flow, but “pressure necrosis” of surrounding tissue is not a typical direct outcome.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. myelogram: A myelogram is an imaging study in which contrast is injected into the subarachnoid space to visualize the spinal canal on x-ray/CT - it is primarily imaging, not the laboratory analysis of CSF.
B. BUN: Blood urea nitrogen is a blood chemistry test (kidney function) and does not analyze cerebrospinal fluid.
C. lumbar puncture: A lumbar puncture (spinal tap) is the procedure used to collect cerebrospinal fluid for laboratory analysis (cells, glucose, protein, culture, etc.).
D. IVP: An intravenous pyelogram (IVP) is an imaging study of the urinary tract using contrast - unrelated to CSF.
Correct Answer is B
Explanation
B. False: Edema in inflammation results from vasodilation and increased vascular permeability (plasma proteins and fluid leak into interstitium), not from vasoconstriction.
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