What Will Be the Immediate Action of an Allergen When

question 59

Multiple Choice

What will be the immediate action of an allergen when it enters that 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

---

Definitions:

Motor Nerves

Nerves that transmit impulses from the central nervous system to muscles, causing movement.

Central Nervous System

The part of the nervous system consisting of the brain and spinal cord, which serves as the primary control center for processing and sending out information.

Internal Organs

Organs located inside the body that perform essential functions, such as the heart, liver, and kidneys.

Inhibitory Neurotransmitter

A type of neurotransmitter that decreases the likelihood of the neuron it binds to firing an action potential.