Following an injury you want to "wall off" the area. What inflammatory response could achieve this result?
edema
vasodilation of blood vessels
formation of a clot
all of the above
The Correct Answer is C
A. edema
Edema involves fluid accumulation and can contribute to swelling and immune cell movement, but it does not directly wall off the injury site.
B. vasodilation of blood vessels
Vasodilation increases blood flow to bring immune cells and nutrients, but does not physically isolate the injury.
C. formation of a clot
A blood clot forms a physical barrier that helps prevent the spread of pathogens and walls off the injury.
D. all of the above
While A and B support inflammation and healing, only C directly achieves the goal of physically walling off the injured area. Therefore, "all of the above" is in
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. thin skin has five strata
Thin skin has only four strata and lacks the stratum lucidum, which is present only in thick skin (e.g., palms and soles).
B. thin and thick skin have abundant hair follicles
Thick skin lacks hair follicles entirely. Hair is present only in thin skin.
C. thick contains a stratum lucidum, corneum & granulosum
These three layers are prominent in thick skin, providing extra protection in high-friction areas like palms and soles.
D. thick is more widely distributed than thin
Thin skin is more widely distributed over the body. Thick skin is limited to palms and soles.
Correct Answer is A
Explanation
A. white blood cells and nutrients to get to site of injury quicker; redness: Vasodilation increases blood flow, bringing immune cells and nutrients quickly to the site. Increased blood flow also causes redness (rubor), a classic sign of inflammation.
B. white blood cells to leave blood vessels at site of injury; redness: While WBCs do exit blood vessels during inflammation (diapedesis), redness is more directly caused by increased blood flow, not by WBC migration.
C. white blood cells and nutrients to get to site of injury quicker; swelling: Vasodilation leads to increased blood flow (causing redness), while swelling (tumor) is more due to increased vascular permeability and fluid leakage.
D. white blood cells to leave blood vessels at site of injury; edema: This describes part of the inflammatory process correctly (WBC extravasation and edema), but vasodilation itself mainly leads to increased blood flow and redness, not edema.
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