Anatomy Ch 12
About this set
Created by:
catherinerace on November 14, 2010
Log in to favorite or report as inappropriate.
Order by
47 terms
Terms | Definitions |
|---|---|
 Adaptive defense system | protects the body against a particular foreign substances |
| Afferent lymphatic vessels | lymph enters lymph nodes through here |
| Antigen | any substance - including toxins, foreign proteins, or bacteria - that when introduced to the body, is recognized as foreign and activates the immune system |
| Antimicrobial proteins | enhance innate defenses either by attacking microorganisms directly or by hindering their ability to reproduce, complement proteins, interferons |
| B cells | lymphocytes that oversee humoral immunity; their descendants differentiate into antibody producing plasma cells |
| Cellular immunity | immunity conferred by lymphocytes called T cells |
| Chemotaxis | attraction of phagocytes and white blood cells to an infected area |
| Complement | a group of plasma proteins that normally circulate in inactive forms; when activated by complement fixation causes lysis of foreign cells and enhances phagocytosis and inflammation |
| Edema | an abnormal accumulation of fluid in body parts or tissues; causes swelling |
| Efferent lymphatic vessels | lymph leaves the lymph nodes through here |
| Hapten | incomplete antigen |
| Hilum | a depressed area where vessels enter and leave an organ |
| Histamine | a substance that causes vasodilatation and increased vascular permeability |
| Humoral immunity | immunity provided by antibodies released by sensitized B cells and their plasma cell progeny |
| Immune response | antigen specific defenses mounted by activated lymphocytes (B & T cells) |
| Immunity | the ability of the body to resist many agents (both living and nonliving) that can cause disease; resistance to disease |
| Immunocompetence | the ability of the body's immune cells to recognized (By binding) specific antigens; reflects the presence of plasma membrane-bound receptors |
| Inflammatory response | redness, heat, swelling, pain |
| Innate defense system | responds immediately to protect the body from all foreign substances, whatever they are |
| Interferons | diffuse to nearby cells and bind to their membrane receptors, stimulates the synthesis of proteins that interfere with the ability of viruses to multiply within these still healthy cells |
| Kinins | a group of polypeptides that dilate arterioles, increase vascular permeability, and induce pain |
| Lymph nodes | a mass of lymphatic tissue, remove foreign material from lymphatic stream |
| Lymph | the watery fluid in the lymph vessels collected from the tissue spaces |
| Lymphatic system | a system of lymphatic vessels, lymph nodes, and other lymphoid organs and tissues |
| Lymphatic vessels | form an elaborate drainage system that picks up lymph and returns it to the blood |
| Lymphatics | lymphatic vessels |
| Lymphocytes | agranular white blood cells formed in the bone marrow that mature in the lymphoid tissue |
| Lymphoid organs | refers to organs in the lymphatic system including lymphatic vessels, lymph nodes, spleen, and tonsils |
| Lysozyme | an enzyme found in sweat, saliva, and tears that is capable of destroying certain kinds of bacteria |
| Macrophages | cell particularly abundant in lymphatic and connective tissues; important in the immune response as an antigen presenter to T cells and B cells |
| Medulla | the central portion of certain organs |
| Mucosa associated lymphatic tissue | protects upper respiratory and digestive tracts against attacks of foreign matter entering those cavities |
| Natural killer cells | lymphocytes that can lyse and kill cancer cells and virus infected body cells using perforins |
| Nonself | foreign intruders |
| Pathogens | disease causing microorganism |
| Peyer's patches | found in the small intestine, capture and destroy bacteria |
| Phagocytes | a cell capable of engulfing and digesting particles or cells harmful to the body |
| Plasma cells | member of a B cell clone; specialized to produce and release antibodies |
| Pyrogens | an agent or chemical substance that induces fever |
| Right lymphatic duct | drains lymp from the right arm and the right side of the head and thorax |
| Self antigens | foreign to anyone but yourself |
| Sinuses | a dilated channel for passage of blood or lymph |
| Spleen | filters blood |
| T cells | lymphocytes that mediate cellular immunity; include helper, killer, suppressor, and memory cells |
| Thoracic duct | drains lymph from the rest of the body |
| Thymus gland | an endocrine gland active in the immune response |
| Tonsils | found in the throat, trap and remove bacteria and other foreign pathogens |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.