Upgrade to remove ads
Lymphatic & Immune Systems
Terms in this set (45)
Composed of a network of vessels, ducts, nodes, and organs. Provides defense against infection.
Help move lymph fluid toward the thoracic cavity.
A type of white blood cell that make antibodies to fight off infections
Lymphatic collecting vessels
Have the same 3 tunics as veins, they have thinner walls with more internal valves, and they anastomose more frequently.
T cells/ lymphocytes
manage the immune response and some directly attack and destroy infected cells
B cells/ lymphocytes
originate and complete their maturation in the bone marrow--they produce antibodies that recognize an antigen. antibodies coat the antigen and mark the cell for destruction
Found within the lymph nodes, they are phagocytes that destroy bacteria, cancer cells, and other foreign matter in the lymphatic stream.
Bean-shaped filters that cluster along the lymphatic vessels of the body. They function as a cleanser of lymph as wells as a site of T and B cell activation
An organ that is part of the lymphatic system; it produces lymphocytes, filters the blood, stores blood cells, and destroys old blood cells.
An immune organ located near the heart. THe thymus is the site of T cell maturation and is larger in children and adolescents.
Form a protective circle of lymphatic tissue around the entrance to the respiratory system.
Macrophages captures and destroys bacteria, prevents them from penetrating through intestinal walls
(medicine) the condition in which an organism can resist disease
Innate (nonspecific) defense system
general and protect against many types of pathogens.
Adaptive (specific) defense system
specialized lymphocytes that recognize foreign molecules in the body.
A system (including the thymus and bone marrow and lymphoid tissues) that protects the body from foreign substances and pathogenic organisms by producing the immune response
Microbes that cause disease
Natural killer (NK) cells
Lymphocyte that recognizes and destroys foreign cells by releasing cytotoxins
nonspecific defense reaction to tissue damage caused by injury or infection
Cells that release chemicals (such as histamine) that promote inflammation.
A substance that increases the flow of gastric juices in the stomach and dilates the walls of small blood vessels.
Enhance the innate defenses by attacking microorganisms or hindering their ability to reproduce
help protect cells not yet infected, small proteins
The pathway by which antigen-antibody complexes can activate the complement system, involving components C1, C2 and C4, and generating a classical pathway C3 convertase.
A microenvironment capable of antibody independent complement activation is made.
Body temperature that exceeds 99.3°F (37.4°C)
specific immunity produced by B cells that produce antibodies that circulate in body fluids
Also called cell-mediated immunity. This process results in the production of T cells and natural killer, NK, cells that directly attach to foreign cells. This immune response fights invasion by viruses, bacteria, fungi, and cancer.
A protein or carbohydrate that, when introduced in the blood, triggers the production of an antibody
A term used synonymously with the CLASSICAL definition of antigenicity. Refers to a molecule that can serve as the stimulus for an adaptive immune response.
Self - tolerance
: the ability of B - cells and T - cells to be relatively unresponsive to "self" (MHC I) proteins; B - cells become self - tolerant in the red bone marrow; T - cells become self - tolerant in the thymus
Special cells in tissue that make antibodies to fight infection
Long-lived antigen-specific B cells that are produced from activated naive B cells during the primary immune response to an antigen. On subsequent exposure to their specific antigen they are reactivated to differentiate into plasma cells as part of the secondary and subsequent immune responses.
Primary immune response
Occurs on first exposure to a particular antigen; Constituted by cellular proliferation and differentiation
Secondary immune response
The adaptive immune response provoked by a second exposure to an antigen. It differs from the primary response by starting sooner and building more quickly.
A harmless variant or derivative of a pathogen that stimulates a host's immune system to mount defenses against the pathogen
An antigen-binding immunoglobulin, produced by B cells, that functions as the effector in an immune response.
An immune reponse in which an antibody binds to and blocks the ativity of an antigen.
Division of the cytoplasm during cell division
Helper T cells
T cells that help the immune system by increasing the activity of killer cells and stimulating the suppressor T cells
Cytotoxic T cells
T cells, often called killer cells because of their capability to kill invading organisms.
Regulatory T cells
Release chemicals that suppress the activity of both T and B cells. Stop immune response after antigen has been destroyed.
A disorder in which the ability of an immune system to protect against pathogens is defective or absent.
Adaptive immunity specific for an antigenic component of the individual's own body.
Overreaction of the immune system to harmless antigens, Occur when the immune system causes tissue damage as it fights off a perceived threat
This set is often in folders with...
Unit 12: World War II
NS1-U5C7&8 - Taking Care of Yourself and Stress
You might also like...
Kaplan MCAT Biology Ch. 10: The Immune System
Other sets by this creator
The Integumentary System - Chapter 5
Reproductive system & development
Chapter 12-14 CNS and PNS