True: The immunity imparted to the body by T-lymphocytes is known as “cell-mediated” immunity, The defense system that recognizes precise foreign antigens is the body’s third line of defense., The production of antibodies is the body’s third line of defense, The activity of antigens and antibodies are involved in specific defense., Antigens and major histocompatibility complex are molecules on the surface of cells that provide identity for the cells. The body either recognized these cells as “self” or “non-self”., Macrophages will phagocytize a foreign cell. It then incorporates the foreign cell’s antigen with the major histocompatibility complex II protein., An example of an APC (antigen-presenting cell) is a macrophage., In order for the immune system to recognise that something is wrong, the abnormal protein bind to a major histocompatibility complex I molecule and then displays on the surface. A cell with an abnormal or altered major histocompatibility complex is considered to be a non - self cell. When a cell is invaded by a virus, the cell begins to produce foreign protein molecules. In order for the immune system to recognize that something is wrong, the abnormal protein bind to a major histocompatibility complex I molecule and then displays on the surface. A cell with an abnormal or altered major histocompatibility complex is considered to be a non - self cell. , The major histocompatibility complex molecules are located on the cell membrane., False: All antibody molecules are composed of ‘carbohydrates.’, The body uses its 'helper' T- lymphocytes to slow down the process to prevent the immune process from becoming overactive, After stimulation by antigens, B- lymphocytes become ‘phagocytic’ cells, which are responsible for antibody production., The immune process begins with the phagocytosis. of foreign organisms by body cells such as ‘lymphocytes.’, The receptor sites positioned on the cell membrane of B-lymphocytes are “antigen” molecules, The immune system begins to develop during the third month after ‘birth.’ The immune system begins to develop during the third month after ‘birth.’, Lymph sometimes have a milky consistency because of ‘proteins.’, The spleen is located in the upper portion of the abdominal cavity, just “anterior” to the diaphragm, The thymus is the body organ in which “B-lymphocytes” are produced., Cortisol is a hormone produce by adrenal cortex as a stress response. It will activate immune system activity, The spleen is located in the upper portion of the abdominal cavity, just “anterior”,

Lymphatic system

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