WHITE BLOOD CELLS AND IMMUNITY

Question 1

YOUR IMMUNE SYSTEM DELS WITH (…)

Answer 1

PATHOGENS

Question 2

WHAT ARE PATHOGENS

Answer 2

THEY ARE MICROORGANISMS THAT CAUSE DISEASE, ONCE PATHOGENS HAVE ENTERED. YOUR BODY THELL REPRODUCE RAPIDLY UNLESS THEY ARE DESTROYE (IMMUNE SYSTEM AND WHITE BLOOD CELL ARE THE ONES THAT DESTROY THEM)

Question 3

WHAT ARE THE TWO DIFFERENT TYPES OF WHITE BLOOD CELLS

Answer 3

PHAGOCYTES AND LYMPHOCYTES

Question 4

PHAGOCYTES…

Answer 4

DETECT THINGS THAT ARE ‘FOREIGN’ (PATHOGENS) THEY THEN ENGULF THE PATHOGENS AND DIGEST THEM

PHAGOCYTES ARE NON-SPECIFIC- THEY ATTACK ANYTHING THAT IS NOT MEANT TO BE THERE

Question 5

LYMPHOCYTES PRODUCE (…)

Answer 5

ANTIBODIES

Question 6

EVERY PATHOGEN HAS UNIQUE MOLECULES CALLED (…) ON ITS SURFACE

Answer 6

ANTIGENS

Question 7

WHAT IS LYMPHOCYTES JOB

Answer 7

WHEN THEY COME ACROSS A FOREIGN ANTIGEN THY WILL START TO PRODUCE PROTEINS CALLED ANTIBODIES THAT WOULD LOCK ON TO THE INVADING PATHOGENS AND MARK THEM OUT FOR DESTRUCTION BY OTHER WHITE BLOOD CELLS

Question 8

WHAT ARE MEMORY CELLS

Answer 8

THEY ARE ALSO PRODUCED IN RESPONSE TO A FOREIGN ANTIGEN, THEY REMAIN IN THE BODY AND REMEMBER A SPECIFIC ANTIGEN- SO THEY CAN REPRODUCE VERY FAST IF THE SAME ANTIGEN ENTERS THE BODY AGAIN

Question 9

VACCINATION PROTECTS FROM (…)

Answer 9

FUTURE INFECTIONS

Question 10

WHAT IS THE WHOLE PURPOSE OF VACCINATION

Answer 10

WHEN INFECTED WITH A NEW PATHOGEN, IT CAN TAKE A WHILE FOR LYMPHOCYTES TO PRODUCE ANTIBODIES, MEANWHILE YOU CAN GET VERY SICK OR EVEN DIE

VACCINATION USUALLY INVOLVES INJECTING DEAD OR INACTIVE PATHOGENS INTO THE BODY- THESE CARRY ANTIGENS THAT ARE HARMLESS BUT STILL TRIGGER IMMUNE RESPONSE- SO YOUR LYMPHOCYTES PRODUCE ANTOBODIES TO ATTACK THEM

MEMORY CELLS WILL ALSO BE PRODUCED AND WILL REMAIN IN THE BLOOD, SO IF LIVE PATHOGENS OF THE SAME TYPE EVER APPEAR THE ANTIBODIES WILL PRODUCE MUCH FASTER