1 An ad hoc network is a local area network (LAN) that is built spontaneously as devices connect. 2  Ad hoc testing is an informal and improvisational approach to assessing the viability of a product. 3  Ad hoc analysis is a business intelligence process designed to answer a single, specific business question.
The circulatory system and immune system serve the same, yet complementary purpose, to keep the entire body alive. The circulatory system does this by delivering oxygen from the lungs to every organ and cell in the body. The immune system does this by consuming foreign substances before they can damage the body. The connection between the circulatory system and immune system lies in the fact that the immune system travels through the entire body, inside the circulatory system. The circulatory system has three major components: the heart, the lungs, and blood vessels.
The Connection with Immune System. The immune system is defined by the National Cancer Institute as a complex system of cells, organs and tissues that protect the body from bacteria, viruses and micro-organisms that try to invade it.Scientists and researchers have known for years that there is a connection between stress and the immune system. report in the November 1990 edition of Psychological Bulletin, states that stress suppresses immune system function and that, over time, the immune system does not adapt but instead continues to wear away. What was intended to protect the body, begins to harm it when unregulated.