February 13, 2012 STND: (7-3.4) OBJ: Explain how infectious diseases affect the human body EQ: How do infectious diseases affect the human body? FF: HW: Create vocabulary cards including Disease, Infectious Disease, Pathogen, Immune System ; Review for Thursday's quiz

Vocabulary Disease--condition in which the normal function of some part of the body is disturbed Infectious disease – diseases that can be passed from one organism to another, are caused by pathogens Pathogen – tiny organisms that cause disease examples include bacteria, viruses, fungi, and protists Immune system – responsible for distinguishing one pathogen from another and responding to the correct type

Essential Content Infectious diseases are caused by tiny organisms called pathogens. · These pathogens can be bacteria, viruses, fungi, or protists. · These pathogens can come from another person, a contaminated object, an animal bite, or the environment. · The immune system is responsible for distinguishing between the different kinds of pathogens and reacting to each according to its type. · Once a pathogen has entered the body, it works by damaging individual cells within the organs or in some cases attacks an entire body system.

How Are Pathogens Spread? Pathogens can spread through contact with an infected person; soil, food, or water; a contaminated object; or an infected animal.

Defending Against Pathogens Your body’s first defense against pathogens is your skin. White blood cells, which travel through the body in the blood are capable of recognizing and destroying viruses. You can avoid infections by washing your hands with soap before eating and after using the bathroom.

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Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks