HARVARD SUMMER PROGRAM IMMUNOLOGY PROJECT VIRUSES–BACTERIA THE THYMUS! THE SPLEEN THE LYMPH SYSTEM

HARVARD SUMMER PROGRAM IMMUNOLOGY PROJECT VIRUSES--BACTERIA THE THYMUS! THE SPLEEN THE LYMPH SYSTEM www.phwiki.com

HARVARD SUMMER PROGRAM IMMUNOLOGY PROJECT VIRUSES–BACTERIA THE THYMUS! THE SPLEEN THE LYMPH SYSTEM

George, Chuck, Meteorologist has reference to this Academic Journal, PHwiki organized this Journal HARVARD SUMMER PROGRAM IMMUNOLOGY PROJECT ELIZABETH MICK BELFAST AREA HIGH SCHOOL BELFAST, MAINE JULY 2004 (REFERENCES ON LAST SLIDE) WHAT WERE THESE RECENT TOPICS EVOLUTION WHY DO SCIENTISTS BELIEVE LIFE HAS EVOLVED IN THE PAST WHAT WAS THE BIGGEST EVIDENCE FOR EVOLUTION WHAT MODERN TOOLS/KNOWLEDGE DO SCIENTISTS LOOK FOR KNOW VIRUSES–BACTERIA LIVING WHY NOT WHY ARE VIRUSES IMPORTANT TO LIVING BEINGS LIVING WHICH KINGDOMS ARE BACTERIA IN WHAT TYPE OF CELLS ARE BACTERIA

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HOW LONG HAVE BACTERIA AND VIRUSES BEEN AROUND MILLIONS OF YEARS DO THEY EVOLVE OR ADAPT HOW MANY VIRUSES ARE THERE BACTERIA WHY ARE WE STILL ALIVE HOW DO WE SURVIVE 1,000,000’S OF BACTERIA AND VIRUSES WHAT IS AN IMMUNE SYSTEM AFTER AN ANIMAL DIES – WHAT HAPPENS WITHIN A MONTH YOUR IMMUNE SYSTEM IS DOING AN INCREDIBLE AMOUNT OF WORK, USUALLY WITHOUT YOU EVEN REALIZING IT WHEN DO PEOPLE USUALLY THINK ABOUT THEIR IMMUNE SYSTEM WHERE IS YOUR IMMUNE SYSTEM LOCATED IN YOUR BODY HAVE YOU HEARD OF THESE ORGANS BEFORE

WOW, YOUR IMMUNE SYSTEM IS EVERYWHERE!! ONE OF THE BIGGEST PARTS OF YOUR IMMUNE SYSTEM WASN’T LOCATED ON THAT PICTURE – WHAT DO YOU THINK IS THE 1ST LINE OF DEFENSE AGAINST BACTERIA AND VIRUSES ENTERING YOUR BODY YOUR SKIN!! THE 1ST LINE OF DEFENSE IN YOUR IMMUNE SYSTEM WHERE CAN BACTERIA AND VIRUSES GET PAST THE SKIN WHEN IT ISN’T CUT MOUTH – WHAT’S IN YOUR MOUTH THAT COULD STOP THEM EYES – WHAT’S IN YOUR EYES THAT COULD STOP THEM NOSE – WHAT’S IN YOUR NOSE THAT COULD STOP THEM HOW/WHY DID SALIVA, TEARS (LYSOZYME), AND MUCUS DEVELOP WHY DO WE NEED ANYTHING BESIDES SKIN IF A BACTERIA OR VIRUS DOES GET INTO THE BODY, THE IMMUNE SYSTEM DETECTS IT AS A FOREIGN ANTIGEN AND WANTS TO ELIMINATE IT BEFORE IT CAN MAKE ITSELF A HOME AND REPLICATE IF THE VIRUS OR BACTERIA IS ABLE TO REPLICATE AND STARTS CAUSING PROBLEMS, YOUR IMMUNE SYSTEM IS IN CHARGE OF ELIMINATING IT

WHERE ARE THESE IN YOUR BODY AGAIN THYMUS SPLEEN LYMPH SYSTEM BONE MARROW THE THYMUS! LOCATED DOWN FROM YOUR NECK BETWEEN YOUR BREASTBONE AND YOUR HEART WHERE A TYPE OF WHITE BLOOD CELL CALLED T- CELL LYMPHOCYTES NEED TO MATURE ESPECIALLY IMPORTANT FOR DEVELOPING BABIES THE SPLEEN LOCATED ABOVE THE STOMACH AND BELOW THE DIAGPHRAGM (LUNGS) ITS JOB IS TO FILTER YOUR BLOOD LOOKING FOR FOREIGN CELLS (ANTIGENS) WHAT DO YOU THINK A PERSON WITHOUT A SPLEEN WOULD HAVE HAPPEN MORE OFTEN

THE LYMPH SYSTEM YOU’VE PROBABLY HEARD OF LYMPH NODES, DID YOU KNOW THEY WERE ALL OVER YOUR BODY NODES ARE CONNECTED BY LYMPH VESSELS WHICH CARRIES A FLUID CALLED LYMPH (LIKE YOUR BLOOD VESSELS CARRYING BLOOD) MAIN JOB = FILTER AND REMOVE BACTERIA GET HELP FROM MANY LYMPHOCYTES (WBCS) THAT STAY IN THE NODES WHY DO YOUR LYMPH NODES SWELL WHEN YOU ARE SICK THE BONE MARROW PRODUCES NEW BLOOD CELLS, BOTH RED BLOOD CELLS (RBCS) AND WHITE BLOOD CELLS (WBCS) YOUR WHITE BLOOD CELLS ARE EXTREMELY IMPORTANT FOR YOUR IMMUNE SYSTEM!! WHITE BLOOD CELLS YOU HAVE HEARD OF RED BLOOD CELLS THERE ARE 5 MAJOR TYPES OF WHITE BLOOD CELLS! – MANY WITH FUNNY NAMES NEUTROPHILS, LYMPHOCYTES, MONOCYTES, EOSINOPHILS AND BASOPHILS – THEY HAVE DIFFERENT JOBS SO YOU WILL NEED TO KNOW SOME OF THEIR NAMES BESIDES JUST WHITE BLOOD CELLS.

NEUTROPHIL MOST OF YOUR WBCS ARE NEUTROPHILS BONE MARROW PRODUCES TRILLIONS OF THEM EVERYDAY, THEY GENERALLY LIVE LESS THAN A DAY ATTRACTED TO FOREIGN PARTICLES, INFLAMMATION, AND BACTERIA SEARCHES OUT AND DESTROYS! WHAT DO YOU THINK PUS IS EOSINOPHILS AND BASOPHILS MUCH LESS COMMON EOSINOPHILS FOCUS ON PARASITES! BASOPHILS CARRY HISTAMINE AND HELP CAUSE INFLAMMATION WHY WOULD INFLAMMATION HELP AN INFECTION

MONOCYTES MONOCYTES END UP BEING CALLED A VARIETY OF NAMES SUCH AS MACROPHAGES AND DENDRITES THESE WBCS LIKE TO CLEAN UP THEY INGEST BACTERIA, MICROBES, DUST, SMOKE, DEAD NEUTROPHILS – PHAGOCYTOSIS ANIMATION http://www.stolaf.edu/people/giannini/flashanimat/cellstructures/cell.swf MONOCYTES – MACROPHAGES AND DENDRITES – PHAGOCYTOSIS LYMPHOCYTES AT THE MOMENT, LYMPHOCYTES ARE GOING TO BE THE MOST COMPLICATED T LYMPHOCYTES AND B LYMPHOCYTES T HELPER AND T CYTOTOXIC LYMPHS B PLASMA AND B MEMORY LYMPHS

T HELPER LYMPHOCYTE JOB T HELPER LYMPHS – ACTIVATED BY MACROPHAGES/DENDRITES T HELPER LYMPHS THEN SEND OUT PROTEIN MESSENGERS TO ACTIVATE CYTOTOXIC T CELLS, B CELLS AND MORE T HELPER LYMPHOCYTES! T CYTOTOXIC LYMPHOCYTE JOB T CYTOTOXIC LYMPHS (KILLER T CELLS) ARE ACTIVATED BY T HELPER MESSENGERS T CYTOTOXIC LYMPHS SEARCH OUT AND DESTROY CELLS INFECTED WITH THAT BACTERIA ANTIGEN (OR VIRUS, WORM, ETC)

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B LYMPHOCYTES B PLASMA CELLS AND B MEMORY CELLS ACTIVATED BY FOREIGN ANTIGENS, MACROPHAGES AND T HELPER LYMPH MESSENGERS B PLASMA CELLS WILL MAKE SPECIFIC ANTIBODIES TO THE INVADING BACTERIA (VIRUS, WORM, ETC.) B MEMORY CELLS WILL HANG OUT AND REMEMBER THAT FOREIGN ANTIGEN IN CASE IT INFECTS THE BODY AGAIN -> QUICKLY PRODUCING PLASMA B CELLS TO MAKE ANTIBODIES AGAINST THE INVADER! ANTIBODIES!

WHAT ARE VACCINATIONS WHAT HAPPENS WHEN YOU ARE EXPOSED TO A FOREIGN ANTIGEN WHAT WILL HAPPEN IF YOU NOW ARE EXPOSED AGAIN WHAT THINGS HAVE YOU BEEN VACCINATED AGAINST YOUR IMMUNE SYSTEM! WHAT ARE SOME OF YOUR NEW WORDS IN YOUR IMMUNE SYSTEM AND HOW DOES EVOLUTION FIT IN DO ALL LIVING ORGANISMS HAVE IMMUNE SYSTEM CAN ALL LIVING ORGANISMS BE INFECTED BY THE SAME VIRUS CAN ALL LIVING ORGANISMS BE INFECTED BY THE SAME BACTERIA WHAT COULD THIS TELL SCIENTISTS

REFERENCES Campbells Biology http://occawlonline.pearsoned.com/bookbind/pubbooks/campbell6e-awl/chapter0/deluxe.html http://science.howstuffworks.com/immune-system.htm http://www.biologymad.com/Immunology/inflammation.jpg http://denniskunkel.com

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