Transcript Antigens - Cloudfront.net

Catalyst # 3
Pg.
1. What is the scientific
name for a white
blood cell?
2. What specific types of
leukocytes are
involved in the
inflammatory
response?
3. Why do you think
there a multiple types
of white blood cells?
Semester 2 Table of Contents
1. Unit 5 Learning Log- Pg. 1
2. Lesson 57- Viruses and Bacteria
Pg. 3-6
3. Lesson 58- White Blood Cells
Pg. 7-10
4. Lesson 59- Types of Immune
Defenses Pg. 11-14
Assigned Vocabulary- Due:
1/30-1/31
3. Macrophage
4. Lymphocyte
5. Neutrophil
6. Leukocyte
7. Antibody
8. Antigen
9. Specific Defense
10. Non Specific Defense
Vocabulary Due
Announcements
Vocabulary Due- Next Th/Fri
Homework Questions Due- Mon/Tues
1st Quiz of the Semester- Next Th/Fri
Pre- Reading Notes
Pg. ___
 BEHAVIORAL EXPECTATIONS:
 Noise Level 0- Silent
 Independent
 Head Up/Facing Forward
 DIRECTIONS:
 Read each ppt slide
 Try to learn the information on your own first
 After reading ALL slides, write down how the information
presented connects to:
• Something you’ve learned before
○
Something you think we’ll learn in the future
AND 1 question you have about the info
•

We learned about ____ in the past. This information
connects to that because _____.
Answer the Poll Questions!
http://www.polleverywhere.com/m
y/polls#!/my/polls
Think Pair Share
 Turn to your elbow partner and share how
this information connects to previous
content.
 We
learned about ____ in the past. This
information connects to that because
_____.
 Tell your partner the most important piece of
information you learned from the notes.
 From this information I learned
__________
Get Ready For Notes- Pg.
Title: Types of Immune
System Defenses
Behavioral Expectations:
Noise Level 0: Silent
Head Up
Facing Forward
Learning Target
 Explain the mechanisms the
immune system uses to fight
infection.
Antibodies
http://www.youtube.com/watch?v
=KpNFAEbLcvk&feature=related
3D:
http://www.youtube.com/watch?
v=lrYlZJiuf18&feature=related
What kind of mechanisms does our
immune system have to fight disease?
A.
Reminders: Pathogen = any agent
(thing) that causes disease.
 ex: bacteria, viruses, microbes,
etc.
The immune system fights
infection by trying to keep you
healthy.
B.
There are two ways it does this:
1. Nonspecific Responses
2. Specific Responses
1. Nonspecific Defenses
 EX: Your skin secretes oil and sweat, which help to
kill bacteria (makes the skin acidic, bacteria don’t
like to live in these conditions).
 Other examples: mucus, tears, inflammation, and
fever
 Inflammation-when part of the body becomes
reddened, swollen, hot, and often painful
 a reaction to injury or infection.
2. Specific Defenses
= ways that your body specifically
fights against certain pathogens.
ex: antibodies, produced by white
blood cells
2. Continued
If a pathogen is able to get past the body’s
nonspecific defenses, the immune system
reacts with specific defenses.
Specific defenses that attack the particular
pathogen (disease-causing agent) are called
immune responses.
This is triggered by an antigen.
3. Antigens
 What
is an antigen?
• Anything that triggers an immune
response – like an ID card of pathogens
(ex: virus, bacteria, other pathogens)
• Each pathogen has its own antigen
4. Antigens on Pathogens
Antigens are how your immune system
knows what to attack.
Cells, bacteria, viruses, etc. have special
things on them that help your immune
system to either recognize them (because
they are part of your body) or see that
they are invaders and should be attacked.
These protein markers are called:
Antigens.
5. To fight against pathogens …
Once your immune system sees that an
invading pathogen has antigens
(markers/IDs) that it does not recognize, it
decides to FIGHT against it!
WHITE BLOOD CELLS create little proteins to
recognize the pathogens. These are
specific to that certain type of pathogen
and help destroy the invaders.
These = ANTIBODIES
6. White Blood Cells
Look
for the protein markers
(ANTIGENS) on pathogens
When they see a pathogen, they
create little proteins to attach to
the pathogen
***These proteins that attach to
pathogens are called
Antibodies****
7. Antibodies
 What are Antibodies?
 Antibodies are proteins that recognize and
bind to antigens (of pathogens)
 What do antibodies do?
 Antibodies are carried in the bloodstream to
attach to the pathogen and signal an immune
response
 As the antibodies overcome the infection, the
plasma cells die out and stop producing
antibodies
Your body produces hundreds of antibodies just in
case some happen to fit actual antigens!
* Antibodies have a specific shape and fit
with a certain pathogen’s antigen
Antibodies
Which of the following is
a SPECIFIC defense??
A. White blood cells
B. Skin
Which of the following is a
NON-SPECIFIC defense??
A. White blood cells
B. Skin
Homework Questions
Due:
1. What is the difference between
specific and non specific
defense?
2. What is the role of an antibody?
3. Why do you think the body has
developed 2 different types of
immune defenses?
Literature Circle- Pg.
___
 BEHAVIORAL EXPECTATIONS:
 Noise Level 0- Silent
 Independent
 Head Up/Facing Forward
 DIRECTIONS:
Choose
a specific job
Follow each job’s specific
instructions
Write answers in your notebook
on pg. ______
Preview Information
That Is Coming Up
https://www.khanacademy.org/sci
ence/biology/immunology/v/typesof-immune-responses--innate-andadaptive---humoral-vs--cellmediated