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The main function of the immune system is to protect the human body against disease and other foreign bodies. The human immune system is a complex system that can identify threats to human health, distinguish these threa... More »

www.reference.com Science Human Anatomy Glands & Hormones

The job of the immune system is to defend the body against infectious organisms and other intruders. This occurs primarily through the actions of white blood cells. Phagocytes destroy non-native cells and organisms, whil... More »

www.reference.com Science Human Anatomy

The immune system is a group of cells, tissues and organs that function to recognize and destroy pathogenic bacteria and viruses. It is the body's main defense against foreign antigens and works to keep humans healthy ev... More »

www.reference.com Science Human Anatomy
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The main function of the lymphatic system is to transport lymph fluid throughout the body, which in turn helps with the functions of the immune system. The main parts of the lymphatic system are the lymph nodes, lymph ve... More »

www.reference.com Science Human Anatomy Glands & Hormones

The thyroid gland plays a major role in the human body's everyday functions by secreting hormones that control metabolism, according to Harvard Medical School. Because the thyroid gland produces the substances that influ... More »

www.reference.com Science Human Anatomy Glands & Hormones

The thyroid gland is a crucial hormonal gland that plays an important role in growth and development, metabolism and regulating several functions of the human body such as temperature and calcium balance. It constantly s... More »

www.reference.com Science Human Anatomy Glands & Hormones

The pituitary gland, known as the "master gland" of the human body, is directly or indirectly responsible for such wide-ranging bodily functions as growth, reproduction, mood, behavior and metabolism. In women, it is res... More »

www.reference.com Science Human Anatomy Glands & Hormones