Flashcards in Chapter 22 Lymphatic System Deck (99)
What are the organs of the immune system?
Thymus, lymph nodes, spleen, and lymphatic nodules.
The left subclavian vein receives lymph from
The lymph from the right foot empties into the
The skeletal muscle and respiratory pumps are used in
Lymphatic, immune, and cardiovascular systems
Which organ produces a hormone that promotes maturation of T cells?
Which portion of the lymph node does not contain any lymphatic nodules.
What is the function of the spleen?
Immune functions, destruction of blood-borne pathogens, removal of ruptured, worn out, or defective blood cells and platelets, storage of platelets, and production of blood cells during fetal life.
What are the physical factors in the first line of defense?
Epidermis of skin, mucous membranes, mucus, hairs, cilia, lacrimal apparatus, saliva, urine, defecation, and vomiting.
What are the chemical factors in the first line of defense?
Sebum, lysozyme, gastric juice, and vaginal secretions.
What makes up the second line of defense?
Antimicrobial substances, natural killer cells and phagocytes, inflammation, and fever.
Which anti-microbial substances reduce viral replication (in uninfected cells)?
Which anti-microbial substances promote cytolysis, phagocytosis and inflammation?
Which cell kills infected body cells and tumor cells?
Natural Killer Cells
What are the signs of inflammation?
Heat, redness, swelling, and pain.
What intensifies the effect of interferons and promotes the rate of repair?
What induces vasodilation and permeability (increased fluid flow) to an infection site?
Histamine, kinins, prostaglandins, leukotrienes, and complement.
When B and T cells are fully developed and mature, they are described as being
What induces the production of a specific antibody?
What stimulates an immune response ONLY when it is attached to a large carrier molecule?
Which class of cells includes macrophages, B cells and dendritic cells?
Antigen Presenting Cells
To become activated, what requires being bound to a foreign antigen AND simultaneous costimulation?
Which cells display CD4 proteins and interact with MHC Class II antigens?
Helper T Cells
Which class of antibodies is mainly found in sweat, tears, breast milk and GI secretions?
Which action makes microbes more susceptible to phagocytosis?
The inability of the immune system to protect the body from a pathogen causes
An acute allergic response can lead to:
Natural exposure to an infectious agent leads to:
The primary response will peak how many days after an exposure?
Which type of immunity defends against any type of invader?