Question

Heparin, Serotonin, and histamine are secreted by

• A. Mast cells
• B. Macrophages
• C. Fibroblast
• D. All of the above

Answer 1

The correct option is A

Mast cells

In areolar tissue, the cells found are fibroblasts, mast cells, and macrophages which are held in a loose matrix. Each cell has got a specific function of its own, which are

Mast cells secrete Heparin ( anticoagulant )

Histamine ( Vasodilator) which lowers BP and

Serotonin ( Vasoconstrictor) which increases BP.