Upgrade to remove ads
A&P 2 Exam 3 Immune System Questions and Answers
Terms in this set (47)
Virus infected cells secrete complement to "warn" other cells of the presence of virus.
Perforins form complexes that penetrate the cell membrane and allow the passage of the destructive protein granzyme to enter the targeted cell.
Super antigens have the ability to stimulate regulatory T cells to their maximum activity levels.
Soluble proteins secreted by plasma cells are called antibodies.
Viral infection will provoke cell mediated immunity but will not activate a humoral response.
Fever is often a beneficial immune response because it can speed the activities of leucocytes and complement proteins.
Anaphylactic shock is a process in the first line of defense against pathogens.
An advantage to adaptive immunity is ________.
its memory cells that provide quicker, larger and more efficient immune response upon second and subsequent exposure to an antigen
Which statement is true about T cells?
their proliferation is enhanced by interleukins 1 and 2
Select the correct statement about antigens.
One antigen may have many different epitopes and may therefore cause the formation of more than one antibody.
Antibody functions include all of the following except ________.
cross-linking cell-bound antigens on red blood cells when blood types are properly matched
The primary immune response ______________.
has a lag B period while B cells proliferate and differentiate into plasma cells
Tissue rejection after an organ transplant is least likely due to the action of ______________.
regulatory T cells
Cytotoxic T cells _____________.
can directly attack and kill other cells of the body
Type I hypersensitivity is caused by _________ that triggers the release of ____________.
T helper cells ________________.
function in the adaptive immune system activation
phagocytic activity involves _______________.
mainly neutrophil and macrophage migration into inflamed areas.
The the first step of the phagocytosis, pathogens __________________ are recognized by the macrophages ________________.
All of the following are non-specific immunity except ________________.
classical pathway of the complement protein system
Which of the following statements is incorrect or false?
Class II MHC molecules appear only on the surface of antigen-presenting cells, thymic cells, and T cells that have been activated by exposure to antigens.
Activated T cells and macrophages release ________ to mobilize immune cells and attract other leukocytes into the area.
Innate immune system defenses include ________.
Complement proteins and antibodies coat a microorganism and provide binding sites, enabling macrophages and neutrophils to phagocytize the organism. This phenomenon is termed ________.
B cells respond to the initial antigen challenge by ________.
Producing progeny cells that include plasma cells and memory cells
Regulatory T cells __________________.
May function in preventing autoimmune reactions by reducing the immune response
T-cell activation requires ________.
antigen binding and co-stimulation
Which of the following would be a component of the body's first line of defense?
Which of the following is characteristic of complete antigens?
reactivity with an antibody
Which of the statements below does NOT describe antigens?
Antigens only come from microbes
A cellular component of the innate defenses include ________________.
natural killer cells
interfere with viral replication within cells
B lymphocytes develop immunocompetence in the ________.
Plasma cells ________________.
secrete a tremendous amount of protein (antibody)
Small molecules that bind with self-proteins to produce antigenic substances are called ________.
The redness and heat of an inflamed area are due to a local hyperemia caused by ________.
Which of the following is NOT a type of T cell?
Which of the following is true of T helper cells activation?
Require MHC2, CD4, Ag fragment
Allergens differ from antigens because ________.
allergens produce an abnormally large immune response to what is an otherwise harmless particle
T cell independent activation of B cell requires __________________.
no T cell participation
Which of the following is true of antigens?
antigens are substances that activate the adaptive immune response
Which of the following statements is true about the commonality between the innate cellular immunity and adaptive immunity?
both require telling self from non-self Ag's
Vaccines work by ____________________.
priming the adaptive immunity with a relatively harmless primary exposure
B lymphocytes are categorized as part of the adaptive branch of the immune system for all of the following reason but one. Which of the following is NOT one of the reasons B lymphocytes are considered part of the adaptive immunity?
They are a first line of defense that can begin killing pathogens immediately and nonspecifically
A flu vaccine is needed seasonally to be effective but a polio vaccine is only needed once. The best explanation of this is _____________.
The flue has several strains that change seasonally
A vaccine is effective because ______________________.
the secondary response of the adaptive immunity is faster and more efficient than the primary response.
Which of the following examples below describes type III autoimmune disease?
IgG production to the soluble proteins leading to the lupus
T cells are differentiated into two groups based on their glycoproteins: CD4 or CD8. Which of the following is true of CD4 T cells?
They become T helper cells
YOU MIGHT ALSO LIKE...
Human Anatomy and Physiology Chapter 21-23 Biology…
A&P Ch. 21- Pearson
OTHER SETS BY THIS CREATOR
A&P 2 Exam 4 Respiratory and Digestive System Ques…
A&P 242 Digestive System Study Guide
A&P 242 Respiratory System Study Guide
A&P 242 Chapter 22 Respiratory System
OTHER QUIZLET SETS
MEB Psych Ch 12 and 13
Biopsychology & Foundations of Neuroscience- Ch.3