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 immune system is made up of cells, organs, proteins and tissues that fight together to guard the human body against diseases. The skin is an organ of the immune system that keeps harmful substances out of the body and holds beneficial substances in.irculatory System. The primary job of the circulatory system is transporting materials through the body. It carries nutrients, oxygen and water to different cells in the body and removes wastes the cells create. The main parts of the circulatory system are the heart, blood, and blood vessels.