What Will Be the Immediate Action of Allergen When It

question 40

Multiple Choice

What will be the immediate action of allergen when it enters the body for a second time?

• A)degranulation
• B)bonding of allergen to adjacent IgE binding sites on mast cells and basophils
• C)binding of IgE by the Fc region to mast cells and basophils
• D)Histamine acts on smooth muscle.
• E)Prostaglandins cause vasodilation and increased vascular permeability.

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Definitions:

Joints

Natural fractures or separations in rocks along which there has been no significant movement parallel to the surfaces of the fracture.

Anticline

A type of fold that is arch-like and has its oldest rocks at its core, formed by the compression and bending of Earth's crust.

Columnar Joints

Vertical, pillar-like structures that form in basalt and other rocks due to cooling and contraction.

Scratch Marks

Linear abrasions on a rock surface, often caused by the movement of a glacier and carrying debris across the rock.