Ch. 21: The Lymphatic System V5 P2

What does natural versus artificial immunity describe?

How immunity is acquired

What does active immunity mean?

Your body makes the response

Does active immunity form memory?

Yes

Does active immunity take time to develop?

Yes

What does passive immunity mean?

You receive ready-made antibodies

Does passive immunity form immune memory?

No

Why is passive immunity temporary?

Borrowed antibodies are cleared

What causes natural active immunity?

Infection or natural antigen exposure

What causes artificial active immunity?

Vaccination

What is a vaccine intended to stimulate?

Your own immune response

About how long does active immunity take to develop in the lecture?

A couple of weeks

Why might a vaccine booster be given?

To strengthen protection

What causes natural passive immunity before birth?

Maternal antibodies through the placenta

What causes natural passive immunity after birth?

Maternal antibodies in breast milk

What causes artificial passive immunity?

Injection of ready-made antibodies

Which type of immunity acts quickly without waiting for antibody production?

Passive immunity

Which type of immunity can provide longer-lasting memory?

Active immunity

What is an example of artificial passive immunity in the lecture?

Injected immune globulin

Why might ready-made antibodies be given after a suspected rabies exposure?

Immediate protection

Why is a vaccine alone too slow for an immediate antibody need?

Active responses take time

Which four combinations describe acquired immunity?

Natural active, artificial active, natural passive, artificial passive