Mast cells play what key role in initiating an immune response? A. Releasing histamines B. Creating antigens C. Clotting wounds D. Creating antibodies

Answer: Option a

Explanation:

Mast cells play a vital in the inflammatory and immediate allergic reactions. These cells release inflammatory mediators such as histamines, cytokines and chemotactic factors.

These chemicals acts on the smooth muscles, mucous glands and the inflammatory cells.

Histamines are not only released when the body detects any antigen it is also released during the time of injury.

Answer: Option C.

Mast cells create antigen

Explanation:

Mast cells are migrant cells of the connective tissue and they are made up of granules which has a lot of histamine. They play an important role in wound healing, immune tolerance, defence against foreign Invaders or pathogens attack and blood barrier function. They release part of their granules into the neigbouring tissues to act as barrier.

In immune response, the create antigen by modulating acquired pathogens. They process bacterial antigen and present it to T cells and lymphocytes to fight against the pathogens.