Biology Immunity ETEA 2023 Retake
PMDC Verified Question 78 of 99
Which of the following is true about bradykinin?
A
It is produced at the site of tissue injury
B
It has no role in the leakage of fluids into the tissues in inflammation
C
It destroys phagocytes
D
It produces interferon gamma
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: It is produced at the site of tissue injury
Concept:

Bradykinin is a potent peptide hormone involved in the inflammatory cascade and pain sensation.

Formula:

None

Solution:

  • When tissue is damaged, an enzymatic cascade in the blood is triggered, cleaving kininogens to produce bradykinin right at the site of tissue injury.


  • Bradykinin is a powerful vasodilator, increases vascular permeability (causing swelling/edema), and powerfully stimulates local pain receptors.


Why other options are incorrect:

  • No role in leakage: False, it is one of the primary causes of capillary leakage during inflammation.


  • Destroys phagocytes / produces interferon: Bradykinin is a vasoactive peptide, not a cytotoxic molecule or a cell that produces cytokines.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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