Biological Systems : The Immune System

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Biological Systems: The Immune System
Patricia Villers
PSYCH 626 Elements of Health Psychology and behavioral health
December 8, 2014
Dr. Phillips

The immune system and its normal functioning in a healthy person
The human body contains different biological systems that work in an interconnected system for the healthy functioning. They include; immune system, circulatory system, nervous system, skeletal system, digestive system and respiratory system.
The immune system is comprises of structure and processes in the body that work together in ensuring that the body is protected against disease or other foreign bodies of potential risk to the normal functioning of the body (Elements of Immune System and Their Rolein
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They are of two type; phagocytes and lymphocytes. “Phagocytes are cells that engulf foreign bodies that might harm the normal functioning of the body (Gordon, 2005).” Lymphocytes on the other hand are white blood cells that allow the body to identify and recall previous foreign bodies and destroy them. Lymphocytes are of two types; B cells and T cells. B cell matures in the bone marrow and makes antibodies that that attacks bacteria and toxins. T cells multiply in thymus and are capable of producing an immune response. “The cellular component of the immune system comprises a range of cell types that are responsible for the activation, execution and termination of immune responses. T cells play a central role in the immune system, and are a perfect example of the complexity of the immune network (Cretney, & Nutt 2011, 10 p. 19).”
“Lymph nodes are small bean-shaped structures that produce and store cells that fight infections and disease. They are contained in the neck, armpits, abdomen, and groin and normally become large or sore when the body is fighting infections (Gordon, 2005).”
Spleen is the largest lymphatic organ in the body containing white-blood cells that fight diseases or infections. It also helps control the amount of blood in the body and disposes old or damaged blood cells.
Bone marrow refers to yellow tissue in the center of bones. It is in
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