23 Questions
How do antibodies act to protect the body against invading agents?
By both direct attack and activation of the complement system
What is the process called when multiple large particles with antigens on their surfaces are bound together into a clump?
Agglutination
What is the term for the molecular complex of soluble antigen and antibody?
Precipitation
What is the process called when antibodies cover the toxic sites of the antigenic agent?
Neutralization
What is the type of immunity that has been discussed?
Active immunity
What is the name of the system that is activated by antibodies to destroy the invader?
Complement system
What percentage of plasma proteins are typically composed of immunoglobulins?
20%
What is the function of the variable portion of an antibody?
Attaches specifically to a particular type of antigen
What is the name of the antibody class that constitutes about 75% of the antibodies in a normal person?
IgG
How many binding sites do IgM antibodies have?
10
What determines an antibody's properties in the tissues?
The constant portion of the antibody
What is the function of IgE antibodies?
Especially involved in allergy
What happens in response to a foreign antigen invading the body?
The person's body develops antibodies or activated T cells
How can temporary immunity be achieved without injecting an antigen?
By infusing antibodies or activated T cells from someone else
How long do antibodies last in the body of the recipient?
2 to 3 weeks
What is the term for conferring immunity through the transfusion of antibodies or T lymphocytes?
Passive immunity
How long do activated T cells last if transfused from another person?
A few weeks
What is the ability of the human body to resist damage from organisms or toxins?
Immunity
What type of immunity is acquired after the body is first attacked by a bacterium, virus, or toxin?
Acquired Immunity
What is the process of destroying swallowed organisms by the acid secretions of the stomach and the digestive enzymes?
Destruction
What is the term for the resistance of the skin to invasion by organisms?
Cutaneous resistance
What type of immunity is caused by a special immune system that forms antibodies and/or activated lymphocytes?
Acquired Immunity
What are the antibodies in the immune system called?
Immunoglobulins
This quiz covers the concept of human immunity, including the body's ability to resist infections and the types of immunity acquired after exposure to bacteria, viruses, or toxins.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
