Presentation on theme: "SPONGE #3 Why might a person with a compromised immune system be unable to fight off a disease?"— Presentation transcript:
1 SPONGE #3Why might a person with a compromised immune system be unable to fight off a disease?
2 SPONGE #3Why might a person with a compromised immune system be unable to fight off a disease?Their immune system is not fighting off the pathogens. If the body cannot fight off pathogens they will get sick.
3 31.1 Pathogens and Human Illness (10) 31.2 Immune System (10) Table of Contents31.1 Pathogens and Human Illness (10)Summary (5)31.2 Immune System (10)31.3 Immune Response(10)31.4 Immunity and Technology (10)31.6 Diseases that Weaken the Immune System (10)Sponges (10)TOTAL= 85 pts
4 Bring ID cards!!!!!! CAHSEE No iPods, MP3s, or Laptops Eat breakfast BEFORE 8 amAll 10th graders get free breakfastTake homework to work on/booksBring ID cards!!!!!!2nd period - report to G-53rd period – report to C-65th period – report to C-4
5 KEY CONCEPT When the immune system is weakened, the body cannot fight off disease.
6 Leukemia is characterized by abnormal white blood cells. Leukemia is cancer of the bone marrow.characterized by immature white blood cellsThey are immature so they cannot fight pathogenscauses weakened immune system
7 Leukemia leads to opportunistic infections. occur because white blood cells cannot fight infectionsif immune system were healthy, would fight these infections
9 HIV targets the immune system. The human immunodeficiency virus (HIV) is a retrovirus (uses your body to duplicate its DNA)attacks and weakens the immune systemis transmitted by mixing infected blood with a bodily fluid
10 HIV infection leads to AIDS. T celldead T cellantibodyactivated B cellHIV reproduces in and destroys T cells.The body cannot replace T cells fast enough.T cells cannot help in immune responses.
11 Ways to get HIVSexual intercourse (semen/vaginal fluid)Mother to child (umbilical cord and/or breast milk)Blood to blood contact (sharing needles/blood transfusion)
12 AIDS is acquired immune deficiency syndrome. several opportunistic infectionsPneumoniaViral infectionsCancerstuberculosisImmune system is worn outvery low amount of T cellsMedicine slows, but does not cureALWAYS results in death