Immune and Lymphatic System Alex Henderson Alex Henderson Block4 Block4

Parts of the Immune system Killer T-cells: Kills certain tumor cells, viral infected cells and sometimes parasites. Killer T-cells: Kills certain tumor cells, viral infected cells and sometimes parasites. Helper T-Cells: Augment immune responses by the secretion of specialized factors that activate other white blood cells to fight off infections. Helper T-Cells: Augment immune responses by the secretion of specialized factors that activate other white blood cells to fight off infections. The B-Cells produces antibodies in response to foreign proteins of bacteria, viruses and tumor cells. The B-Cells produces antibodies in response to foreign proteins of bacteria, viruses and tumor cells. Complement: made up of 25 proteins that work together to complement the action of antibodies in destroying bacteria. Complement: made up of 25 proteins that work together to complement the action of antibodies in destroying bacteria. Antibodies are produced by B-Cells in response to an antigen to destroy the antigen. Antibodies are produced by B-Cells in response to an antigen to destroy the antigen.

How the body’s immune system works Anything that triggers an immune response is an antigen. Anything that triggers an immune response is an antigen. Some times the immune system over reacts to foreign substances. This is an allergy. Some times the immune system over reacts to foreign substances. This is an allergy.

Immunity You acquire immunity because some of the activated T and B cells become memory cells. You acquire immunity because some of the activated T and B cells become memory cells. Immunity can be strong or weak, short lived or long lasting, depending on the antigen. Immunity can be strong or weak, short lived or long lasting, depending on the antigen. Immunity can also be obtained from inherited genes. Immunity can also be obtained from inherited genes. Immunity can be transmitted by injections of serum rich in antibodies. Immunity can be transmitted by injections of serum rich in antibodies.

HIV and AIDS Human Immunodeficiency Virus, the virus that causes Acquired Immino-Deficiency Syndrome (AIDS). Human Immunodeficiency Virus, the virus that causes Acquired Immino-Deficiency Syndrome (AIDS). HIV destroys vital T-Cells making the way for a variety of immunologic shortcomings. HIV destroys vital T-Cells making the way for a variety of immunologic shortcomings. AIDS is acquired by intimate sexual contact, transfer from mother to infant, or direct blood contamination. AIDS is acquired by intimate sexual contact, transfer from mother to infant, or direct blood contamination. THERE IS NO CURE!!! Newly developed antiviral drugs can SLOW the advance of the disease. THERE IS NO CURE!!! Newly developed antiviral drugs can SLOW the advance of the disease. AIDS makes the victim fall prey to more unusual, life threatening infections and rare cancers. AIDS makes the victim fall prey to more unusual, life threatening infections and rare cancers.

Functions of the Lymphatic System The lymphatic system transportes white blood cells. The lymphatic system transportes white blood cells.

Diagram of the Lymphatic System

Diseases of the Lymphatic System Lymphangitis occurs in some acute pyogenic infections in which the microbes in the lymph draining from the area infect and spread along the walls of lymph vessels. Lymphangitis occurs in some acute pyogenic infections in which the microbes in the lymph draining from the area infect and spread along the walls of lymph vessels. Tumors may grow into and include, a lymph vessel or node and obstruct the flow of lymph. Tumors may grow into and include, a lymph vessel or node and obstruct the flow of lymph.

Parts of Lymphatic System Lymph: clear fluid that contains white blood cells and is carried in the vessels. Lymph: clear fluid that contains white blood cells and is carried in the vessels. Lymph Nodes: small lumps of glandular tissue distributed along the lymph channels Lymph Nodes: small lumps of glandular tissue distributed along the lymph channels Lymphocytes: free moving cells with large nuclei that are created in the bone marrow Lymphocytes: free moving cells with large nuclei that are created in the bone marrow The spleen is a lymphaid organ in the abdomen that serves as filter for blood The spleen is a lymphaid organ in the abdomen that serves as filter for blood The thymus helps to produce white blood celss. The thymus helps to produce white blood celss. The tonsils are 2 glands in the back of the throat. They help protect the entrance to the digestive system and the lungs. The tonsils are 2 glands in the back of the throat. They help protect the entrance to the digestive system and the lungs.