Vascular response includes
Allowing the lining of the vessels to become impermeable
Dilating blood vessels
Limited perfusion to the site of injury
Constrict blood vessels
The Correct Answer is B
A. The vascular response initially increases permeability to allow essential cells and substances to reach the site of injury, rather than becoming impermeable.
B. Dilating blood vessels increases blood flow to the injured area, facilitating the delivery of immune cells and nutrients necessary for healing.
C. Limited perfusion contradicts the purpose of the vascular response, which is to enhance blood flow to the injury.
D. While blood vessels can constrict initially to minimize blood loss, the vascular response overall is characterized by dilation to promote healing.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Anti-inflammatory drugs primarily work by blocking the chemical mediators of inflammation, such as prostaglandins, thereby reducing pain and swelling.
B. While some anti-inflammatory medications may affect blood flow indirectly, their main action is not to increase blood flow to tissues.
C. Anti-inflammatory drugs may help minimize scar formation indirectly but are not primarily indicated for that purpose.
D. These drugs do not enhance the immune system; instead, they modulate inflammatory responses.
Correct Answer is C
Explanation
A. Autoimmune diseases involve inappropriate immune responses but are not classified solely as hypersensitivity reactions.
B. Degranulation refers to the release of substances from immune cells, often a part of hypersensitivity reactions, but does not encapsulate the full scope of their consequences.
C. Allergic diseases are directly caused by hypersensitivity responses, which occur when the immune system reacts excessively to harmless substances.
D. Deficiency syndromes relate to a lack of immune function or components, not the excessive responses seen in hypersensitivity reactions.
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