active and passive immunity

Question 1

define: active immuntiy

Answer 1

production of antibodies in an individual in response to exposure to antigen

Question 2

does active immunity involve a person’s specific immune response being actiated - implications?

Answer 2

yes. produces their own immune cells including memory cells so next time they will repsond more quickly

Question 3

natural vs articifical active immunity?

Answer 3

 Natural active immunity: acquired naturally after infection., from environment
 Artificial active immunity: artificially introduced disabled pathogen/its toxin, usually by vaccines.

Question 4

define: oassive immunity

Answer 4

antibodies obtained from another organism enter the person’s body.

Question 5

does passive immunity involve a person’s specific immune response being actiated - implications?

Answer 5

no, so don’t make immune cells, so no immunological memory

Question 6

artificial vs natrual passive immunity?

Answer 6

 Natural passive immunity: antibodies enter person naturally – IgG antibodies pass from placenta to foetus or in breast milk
 Artificial passive immunity: antibodies from other individuals are injected into a person.

Question 7

examples of artificial passive immunity?

Answer 7

• People with HepA have antibodies extracted from their blood plasma, which are injected into tohers
• Antivenom is gained usually from horses, who are injected with non lethal dose of snake venom, which produces antibodies which are extracted, purified and used as antivenom.