alleryStart learning →Which set of substances is found in neutrophil granules?
AHistamine, heparin, and serotonin
BLysozyme, oxidants, and defensins
CAntihistamines and worm toxins
DFibrinogen, thrombin, and plasmin
Answer & Solution
Correct answer: B. Lysozyme, oxidants, and defensins
1. Neutrophils are rapid responders with a preference for bacteria, so their granules carry antibacterial weapons.
2. Lysozyme breaks down bacterial cell walls.
3. Oxidants such as hydrogen peroxide add chemical damage.
4. Defensins bind to and puncture bacterial and fungal membranes so the contents leak out.
5. Histamine and heparin belong to basophils, and antihistamines and worm toxins to eosinophils, so those options name the wrong granulocyte.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 18 "The Cardiovascular System: Blood", section 18.4 Leukocytes and Platelets_
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