Question 45 of 70
Q.Name the chemical alarm signals released by damaged mast cells.
Puducherry TnboardTamil Nadu HSC (DGE) Board 2019Subjective· 3mImportance★★★★★
64% · 45/70 Questions
You're viewing a preview — the full solution, concept, methods & PYQ mapping are locked.
Start your 14-day free trial to unlock the full solution →Mast cells release histamine, serotonin and bradykinin as chemical alarm signals when damaged or triggered by an allergen.
When an allergen cross-links IgE antibodies bound to a mast cell's surface, the cell degranulates and releases a set of chemical mediators, chiefly histamine (which increases vascular permeability and causes itching/swelling), along with serotonin and bradykinin, which contribute to the inflammatory response by dilating blood vessels and stimulating pain receptors — together producing the classic allergy symptoms (redness, swelling, itching). This rapid …
Unlock everything free for 14 days
- Full step-by-step solutions
- Concept-first explanations
- Methods, shortcuts & mistakes
- PYQ mapping + timed mock tests
Full access for 14 days. No credit card required.