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.
Human Circulatory System. The human circulatory system functions to transport blood and oxygen from the lungs to the various tissues of the body. The heart pumps the blood throughout the body. The lymphatic system is an extension of the human circulatory system that includes cell-mediated and antibody-mediated immune systems. The components of the human circulatory system include the heart, blood, red and white blood cells, platelets, and the lymphatic system.