The white blood cells that attack foreign invaders to the body are called Quizlet

Overview

Special white blood cells called lymphocytes play a key role in the immune system's response to foreign invaders. There are two main groups, both of which form in bone marrow.

One group, called T-lymphocytes or T-cells, migrates to a gland called the thymus.

Influenced by hormones, they mature there into several types of cells, including helper, killer, and suppressor cells. These different types work together to attack foreign invaders. They provide what's called cell-mediated immunity, which can become deficient in persons with HIV, the virus that causes AIDS. HIV attacks and destroys helper T cells.

The other group of lymphocytes are called B-lymphocytes or B cells. They mature in the bone marrow and gain the ability to recognize specific foreign invaders.

Mature B cells migrate through the body fluids to the lymph nodes, spleen, and blood. In Latin, body fluids were known as humors. So B-cells provide what's known as humoral immunity. B-cells and T-cells both circulate freely in blood and lymph, searching for foreign invaders.

Updated by: Stuart I. Henochowicz, MD, FACP, Clinical Professor of Medicine, Division of Allergy, Immunology, and Rheumatology, Georgetown University Medical School, Washington, DC. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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The IMMUNE SYSTEM is a NETWORK of CELLS, TISSUES, and ORGANS that work together to defend the body against ATTACKS, INFECTIONS, SICKNESS, ILLNESS or DISEASES caused by foreign invaders such as bacteria, virus, parasites, and fungi.

by "foreign invaders", This refers to *microbes
or tiny organisms such as bacteria, virus, parasites, and fungi which can attack the body and cause infections, sickness, illness, or diseases*

In all, the IMMUNE SYSTEM is the body's special defense mechanism that allows it to protect itself against ATTACKS, INFECTIONS, SICKNESS, ILLNESS or DISEASES caused by foreign invaders such as bacteria, virus, parasites, and fungi.

The immune system is important because it protects the body from infections, sickness, illness, or diseases caused by foreign invaders such as bacteria, virus, parasites, and fungi.

Antigens, Pathogens, Microbes, Foreign Invaders: refers to bacteria, virus, parasites and fungi which can cause infections, sickness, illness, or diseases

cells of the immune system that fights of foreign invaders, are found in the part of the blood that fights invaders

cells that part of the immune system that are responsible for getting rid of damaged cells , fighting off attacks from , infections, sickness, illness or diseases caused by foreign invaders such as bacteria, virus, parasites, and fungi.

The cells of the immune system are known as white blood cells. Each type of cell
performs certain functions, such as killing damaged or infected cells, carrying
messages, making antibodies, or carrying away debris.

There are four major
types of white blood cells: T cells, B cells, Neutrophils and Macrophage.