The gland that plays a direct role in the development of the immune system is the  A. Thymus B. Posterior C. Pineal gland. D. Thyroid

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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The gland that plays a direct role in the development of the immune system is the 
A. Thymus
B. Posterior
C. Pineal gland.
D. Thyroid 

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Step 1

Introduction:

The body's ability to fight off any external antigens, such as bacteria is termed immunity. . The immune response is controlled by the lymphoreticular system, which includes lymphoid and reticuloendothelial cells. Specific immunity is provided by lymphoid cells (plasma cells and lymphocytes). 

As part of the reticuloendothelial system, macrophages and polymorphonuclear cells are responsible for removing microbes and other foreign materials from the blood and tissues and thus aiding in the non-specific immune response.

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