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Histamines the inflammation producing substances are produced by which cells of the body?
Options
(a) Collagen fibres
(b) Macrophages
(c) Mast cells
(d) Subtentacular cells
Correct Answer:
Mast cells
Explanation:
Mast cells are present in most body tissues, but are particularly numerous in connective tissue, such as the dermis (innermost layer) of skin. Mast cells play an important role in the body’s allergic responses. Mast cells contain metachromatic granules which store a variety of inflammatory mediators. These include:
-Histamine (causes running nose, sneezing and itching, and narrows the airways in the lungs.) and serotonin.
– Proteolytic enzymes that can destroy tissue or cleave complement components.
– H
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Topics: Structural Organisation In Animals
(175)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Myoglobin is present in
- Random unidirectional change in allele frequencies that occurs by chance
- The transport of ions up the stem to all parts is through
- A column of water within xylem vessels of tall trees does not break under its weight
- Ribose sugar is present in
Topics: Structural Organisation In Animals (175)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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