Health article writer and researcher; Over 10.000 articles and research papers have been written and published on line, including world wide health, ezine articles, article base, healthblogs, selfgrowth, best before it's news, the karate GB daily, etc.,.
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Some articles have been used as references in medical research, such as international journal Pharma and Bio science, ISSN 0975-6299.
Human aging is a biological process, no one can stop, but delay it. It is possible that one person has a physiological younger than his or her biological if one engages in healthy living life style and eating healthily by increasing the intake of good healthy food such as whole grain, fruits, vegetables, beans and legumes, etc. and reducing the consumption of harmful foods, such as saturated fat, trans fat, artificial ingredients, etc.
An immune system is a system of biological structures and processes within an organism that protects against disease by identifying and killing pathogens, including bacteria, virus, parasites, etc. and tumor cells, including irregular cells growth, cancer cells to keep us healthy. In most cases, the immune system does a great job of keeping people healthy and preventing infections. But sometimes problems with the immune system can lead to illness and infection.
Immune system and functioning
a. Red and white blood cells
During the process, the tissue of bone marrow of the long bone produce stem cells which will evolve into progenitor cells. This progenitor cells finally differentiate into white and redblood cells. While the red blood cells deliver oxygen (O2) and nutrients to the body tissues via the blood flow through the circulatory system, the white blood cells or leukocytes are cells of the immune system involved in defending the body against both infectious disease and foreign materials.
b. Thymus gland
The thymus gland a specialized organ form part of the immune system. It helps in the production and functioning of T-lymphocytes (T cells), which are critical cells of the adaptive immune system by providing an inductive environment for development of T-lymphocytes from hematopoietic progenitor cells. The thymus gland starts to shrink from the time when we was born and by age of 60, it had shriveled away to almost nothing.
Beside it is important to the functions of above, it also produced varies protein hormones, such as IL-2, is a protein manufactured by lymphocytes. Peripheral blood obtained from patients with chronic hepatitis B and viral infections responded to THF with increased production of IL-2. This suggests a possible antiviral role for this thymic hormone, and is one of the reasons we should replace thymic hormone as we pass the second decade.
c. Lymphatics system
The lymphatic system form part of the immune system comprising a network of conduits called lymphatic vessels that carry a clear fluid called lymph unidirectionally toward the heart. Beside having a function of removing interstitial fluid from tissues, absorbing and transporting fatty acids and fats from the circulatory system and transporting immune cells to and from the lymph nodes into the bones, it also enhances the immune system of the body by defending the body against the infections and spread of tumors due to its connective tissue with various types of white blood cells enmeshed in it, most numerous being the lymphocytes.
Spleen formed part of immune system, is imporant in the filtration process of removal of old or damaged red blood cells from the circulation and filters out bacteria of the blood. The immunological function of spleen in human body is looked after by the white pulp which consists of aggregates of lymphoid tissue. Abnormal function of spleen can result in enlarged organ due to its inability to perform function of removing of old or damaged red blood cells, leading to accumulation or trapping of red blood cells, causing major turmoils in immune system.
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