Anatomy
Lymph always flows toward the __.
Heart
The body’s first line of defense against pathogens is?
skin and mucous membranes
What do specific defenses of the immune system do?
ssue a specific attack to particular foreign substances
What is an abnormal immune response to a harmless substance?
Allergy
The lymph organ that programs T cells and functions primarily during childhood and adolescence is the?
Thymus
A __ is any harmful or disease-causing organism.
Pathogen
What kind of immunity are vaccines?
active
Rare acute, airways constricting systemic allergic reaction?
anaphylaxis
What is correct about lymph node structure?
reticular fibers act as a net to catch debris
macrophages live on the fibers
lymphocytes live within the spaces
3 most common symptoms of the inflammatory response?
Heat
Redness
swelling
B cells secrete __ in response to an antigen.
antibodies
Mass cells release histamines causing a variety of symptoms ?
Allergies
An example of innate or nonspecific immunity?
Inflammatory response
Mucous
Enzymes in tears
The antigen binding site of an antibody is the __ portion.
variable
Daily Double
An inflammatory response begins with release of chemicals, which causes 3 symptoms?
white blood cells are attracted to the damaged area
capillaries become leaky
blood vessels dilate
Congenital or acquired deficiency in number or function of immune cells?
immunodeficency
B cells develop in the?
Bone Marrow
Activation of B cells or T cells triggers rapid division called __.
clonal selection
_____ cells are responsible for cell-mediated immunity.
T
Known as a variety of diseases caused by the immune system attacks on "self" antigens?
Autoimmunce Diseases