Wednesday Warm Up 5/25
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Transcript of Wednesday Warm Up 5/25
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Wednesday Warm Up 5/251. What do the mucous membranes do in the
immune system?2. What is your body’s first line of defense?3. If you have already been exposed to a virus,
you will not get sick from it a second time. What type of immunity is this?
• Turn in Reading Guide 31.1 and Epidemic Reading Questions
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Wednesday Agenda• Today
– Objective: Differentiate between nonspecific and specific defenses.
– Examine different parts of the immune system and the roles they play
– Textbook Activity– Video Clip
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Final Weeks• Library
– 3rd Period: Tues. 5/31 and Wed. 6/1– 4th Period: Fri. 5/27 and Tues. 5/31
• Next Week– Gather information and work on Project (Disease Brochure)
• Last Week– Projects Due June 6th – Gallery Walk Presentations June 6th and June 7th – Dissection (Hopefully!)
• Have to be passing and turned in BOTH projects
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Directions• Get out the worksheet (31.2) from yesterday• Add the words to your vocabulary chart in your
notebook• Leave space to add in the definitions• I will provide you with analogies for the “How to
Remember” section of your chart
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When the castle is under attack!
The Immune System Response
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Your immune system contains many structures and cells, each playing a particular role in policing your body and destroying invaders
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Your Skin- The Fortress or Gate
• In order to get a pathogen, it must first breach our skin. – Enters through a cut or open surface
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Phagocytes or MacrophagesThe Guards • “Eater” cells surround and
engulf germs that have recently entered the body.
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Antigens- The Germ’s Fingerprint
• An antigen is a protein or particle on the surface of a bacteria or virus (the germ’s fingerprint)
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Antibody- Warrant of Arrest
• An antibody is a particle made by the body that matches antigens produced by pathogens.
• Antibodies attach to germs, identifying them as a targets.
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Your body produces hundreds of antibodies to target different antigens!
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Interferons- Crime Prevention
• Once a cell has been infected, it releases interferons.
• Interferons trigger healthy cells to produce enzymes that block virus infections
• Use past information to prevent future “crimes”
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T-cells The Navy SEALs
• When the guards (macrophages) can’t catch the bad guys, our immune system sends in T-cells to get the job done.
• Navy SEALs are a specialized group like T-cells.
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B cells- The Undercover Cops
• B cells are covered in antibodies.
• They float around waiting to attach to an antigen, just like undercover cops gather enough evidence to nail the criminals.
From The Departed
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Memory Cells- The CIA of the body
• B cells also produce memory cells that target specific antigens.
• They store information about the germ.
• If the germ reappears, antibodies are immediately released.
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Textbook Activity
• Using a textbook and the word bank at the bottom of the page, fill in the graphic organizer and answer the questions.
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Whooping CoughWrite down the following questions and answer them after
watching the video.
1.What makes whooping cough different from a regular cough/cold?
2.Why does it affect infants more?
3.What are two things adults can do to prevent spreading whooping cough?
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Whooping Cough Video
• www.youtube.com/watch?v=3akJVesMdvs
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Exit TicketExplain in complete sentences how fighting
crime is similar to our immune system fighting diseases. You should have at least 3 quality sentences in your response.