Human Immunity Lecture 5

Play an AI-generated podcast conversation about this lesson

What percentage of plasma proteins are usually made up of immunoglobulins?

30%

10%

40%

20% (correct)

What is the function of the variable portion of an antibody?

Determines antibody's adherence to specific structures

Determines the antibody's properties in tissues

Determines the ease with which antibodies pass through membranes

Attaches specifically to a particular type of antigen (correct)

What is the main function of the constant portion of an antibody?

Determines the antibody's properties in tissues (correct)

Attaches specifically to a particular type of antigen

Attachments to specific structures within the tissues

Determine the ease with which antibodies pass through membranes

What do the letters 'Ig' in IgG, IgA, IgD, IgE, and IgM stand for?

Immunoglobulin Signup and view all the answers

Which class of antibodies constitutes about 75% of the antibodies of a normal person?

IgG Signup and view all the answers

How many binding sites do IgM antibodies have?

10 Signup and view all the answers

What is the ability of the human body to resist almost all types of organisms or toxins that tend to damage tissues and organs?

Immunity Signup and view all the answers

What type of immunity does not develop until after the body is first attacked by a bacterium, virus, or toxin?

Acquired immunity Signup and view all the answers

Which of the following is an example of innate immunity?

Destruction of swallowed organisms by the acid secretions of the stomach Signup and view all the answers

What is the function of the special immune system in acquired immunity?

To form antibodies and/or activated lymphocytes that attack and destroy the specific invading organism or toxin Signup and view all the answers

What are the antibodies produced by the immune system called?

Immunoglobulins (Ig) Signup and view all the answers

What is the result of the interaction between the immune system and a specific invading organism or toxin?

The invading organism or toxin is destroyed Signup and view all the answers

What are the two main ways antibodies act to protect the body against invading agents?

By direct attack on the invader and by activation of the complement system Signup and view all the answers

What is the process by which multiple large particles with antigens on their surfaces are bound together into a clump?

Agglutination Signup and view all the answers

What is the process by which antibodies cover the toxic sites of the antigenic agent?

Neutralization Signup and view all the answers

What is the term for the type of immunity acquired through the action of antibodies?

Passive immunity Signup and view all the answers

What is the system that is activated by antibodies to destroy the invader?

Complement system Signup and view all the answers

What is the term for the direct attack of antibodies on invading agents?

Direct action Signup and view all the answers

What is the primary function of antibodies in the context of passive immunity?

To provide temporary protection against disease Signup and view all the answers

How long do activated T cells obtained from another person last in the recipient's body?

A few weeks Signup and view all the answers

What is the term for the transfer of antibodies or T cells to confer immunity?

Passive immunity Signup and view all the answers

What is the source of the antibodies or T cells used for passive immunity?

The blood of someone else who has been actively immunized Signup and view all the answers

What is the duration of protection offered by antibodies in the context of passive immunity?

2 to 3 weeks Signup and view all the answers