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Vascular response includes

A.

Allowing the lining of the vessels to become impermeable

B.

Dilating blood vessels

C.

Limited perfusion to the site of injury

D.

Constrict blood vessels

Answer and Explanation

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.


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Related Questions

Correct Answer is D

Explanation

A. Having had the flu does not guarantee lifelong immunity; different strains can circulate each year.

B. While previous infection may provide some immunity, it is not complete protection, and vaccination can enhance protection against future infections.

C. Immunosuppressants would actually increase the risk of infection rather than provide protection.

D. Vaccination is the best way to provide protection against prevalent strains of influenza, as the virus can mutate and new strains can emerge each season.

Correct Answer is B

Explanation

A. Apoptosis refers to programmed cell death, which is a controlled process rather than a direct consequence of infection and blood flow issues.

B. Necrosis occurs when there is unregulated cell death due to injury or lack of blood flow, often resulting from infection or inflammation leading to tissue damage.

C. Cellular adaptation refers to changes that occur in cells in response to stress or injury but does not encompass the direct consequences of infection and impaired blood flow.

D. Cellular damage can occur as a result of necrosis or other processes, but in the context of infection and blood flow issues, necrosis is the more definitive outcome.

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