Cellular Processes and structure

Slides:



Advertisements
Similar presentations
Chapter 43 Notes The Body’s Defenses. Nonspecific Defenses Against Infection The skin and mucous membranes provide first-line barriers to infection -skin.
Advertisements

Essential Knowledge 2.D.4:
The Immune System. First lines of defense: Skin Mucus Stomach acid Digestive enzymes.
Immune System Basics  Immunity: The capacity to resist infectious pathogens.  Pathogens: Disease-causing organisms  Self vs. Non-self recognition 
Immune System Chapter 14.
The Immune System. Learning Objectives The need for an immune system- Distinguishing Self vs. Non-self Evolutionary trends in immune systems Non specific.
College Board 2.D.3 – Biological Systems Are Affected By Disruptions to Their Dynamic Homeostasis Disruptions at the molecular level and cellular levels.
The Body Defenses. Body Defense Overview Innate Immunity –Barrier Defenses –Internal Defenses Acquired Immunity –Humoral Response –Cell-mediated Response.
The Immune System. Learning Objectives The need for an immune system- Distinguishing Self vs. Non-self Evolutionary trends in immune systems Non specific.
AP Biology Immune System phagocytic leukocyte Fighting the Enemy Within! Big Questions: 1.What is the purpose of a immune system? 2.How does the immune.
Chapter 43 Biology – Campbell • Reece
The Immune System. Function The immune system functions to provide protection from disease causing agents in the one’s environment Pathogens include viruses,
Chapter 52 Immune Sytem By: Group D: Daniel Cazares del Castillo, Fabian Abarca, Justin Cruz, Jayce Frank, William Hoover, Alberto Rodriguez.
18 Animal Defense Systems Animal defense systems are based on the distinction between self and nonself. There are two general types of defense mechanisms:
Immune System. Innate Immunity Innate immunity – pre-programmed defense responses.
___________DEFENSES of the HOST: THE IMMUNE RESPONSE
Immune System. An open wound allows ‘germs’ to enter the body.
Ch 31 immune system AP lecture hill.com/sites/ /student_view0/ch apter22/animation__the_immune_response.h tml
Ch 43 The Body’s Defense. Three lines of Defense: 1. External defenses 2. Internal (phagocytes, inflammation) 3. Specific defense: (lymphocytes) 1 & 2.
3/17/08 Lymphatic System Chapter 20 – Day 3. 3/17/08 Immune Response  Definition of Immunity  Lines of defense – non-specific vs. specific  Characteristics.
The Immune System. Protects our bodies from pathogens – disease causing agents May be bacteria, viruses, protists, fungi, etc Response could be nonspecific.
The Lymphatic System and Immunity A.Pathogen: B. Antigen: C. Lymphatic System: An organism or virus that causes disease. Foreign antigens trigger the immune.
Immune System Immune System Overview Influenza Infection
Chapter 43 Warm-Up Define the following terms:
Daily Warm-up March 19th During the Quarter Quell, Katniss Everdeen searches for water in the arena. Before she found it, she began to become dehydrated.
Ch 15: The Immune System.
13/11/
Immune System Basics Immunity: The capacity to resist infectious pathogens. Pathogens: Disease-causing organisms Self vs. Non-self recognition Major Histocompatibility.
The Basics of Immunology
Immune System Chapter 43 AP/IB Biology.
Immunity Ch Microbiology.
Body Defenses: Overview of Adaptive Defenses
Immune system Immunity The function of the immune system is to fight infection through the production of the cells that inactivate foreign substances or.
Chapter 18 Warm-Up Define the following terms:
The immune system Chapter 43.
Chapter 43 Warm-Up Define the following terms:
Chapter 43 Warm-Up Define the following terms:
Chapter 43 Notes The Body’s Defenses.
External and Internal Defenses
NOTES: Specific Defenses / Immunity (UNIT 10 part 3)
THE IMMUNE SYSTEM HOW DO ANIMALS PROTECT THEIR BODIES AGAINST INVASION? Refer to pg in Holtzclaw Ch 43 in Campbell and media resources.
Chapter 43 The Immune System.
Chapter 24 The Immune System.
Chapter 43 Warm-Up Define the following terms:
The immune system Chapter 43.
Ch 43 The Body’s Defense.
Genetics of Immunity: Part 2
Immune System Chapter 14.
6.3 T cells and cell-mediated immunity
External and Internal Defenses
The Body’s Defense Against Disease Unleashing the Fury of the Immune System Cytotoxic T-Cell killing a cancer cell Macrophage engulfing bacteria.
Humoral & Cell-mediated immunity
Chapter 43 Warm-Up Define the following terms:
Chapter 43 THE IMMUNE SYSTEM.
The body’s defenders.
Unit 4 - Immunology and Public Health
Immune System Chapter 14.
Immune System phagocytic leukocyte Big Questions:
Quiz today: Immune system
Chapter 43 Warm-Up Define the following terms:
Immune System Practice Test
Humoral and Cell Mediated Immunity
-Wanted Poster due Friday
Effects of Disruptions
What is the immune system?
Immune System ch. 43.
Animal Defense Mechanisms… Immunity
Presentation transcript:

Cellular Processes and structure 04 Homeostasis Exchange of energy/matter Homeostatic mechanisms Defense against infection

Immune system Holtzclaw: 233-236

Animals have a variety of chemical defenses against infections Pathogen - anything that causes disease, typically a "germ“ Invertebrates only have nonspecific (innate) response mechanisms Insects and other invertebrates cells recognize peptidoglycan trigger anti-bacterial cascade response

…nonspecific response mechanisms Phagocytes recognize, engulf, and digest pathogenic cells Natural killer cells detect virus-infected cells and initiate apoptosis

Mammals have specific immune responses In addition to nonspecific immune responses Two types: cell mediated and humoral

… Mammals have specific immune responses Antigens - proteins found on pathogens that generate an immune response Antibodies -"tag" antigens by attaching to them Allow them to be phagocytized

Humoral immune response (specific) Responds to antigens found in the blood and lymph (humors) B Cells Type of lymphocyte (white blood cell) Respond to intact antigens (where?) Produce antibodies (function?)

Cell-mediated immune response (specific) Responds to antigens fragments which have already infected a cell. T Cells – also types of lymphocytes Cytotoxic T cells Helper T-cells Memory T Cells

Cell-mediated immune response (specific) T Cells – also types of lymphocytes Cytotoxic T cells Also called natural killer cells (function?) Helper T-cells Release cytokines (a type of cell signal) that initiates and coordinates the activity of other immune cells (see diagram) Memory T Cells Produced during infection Stay in the system Secondary immune response

Cell-mediated immune response (specific) MHC – major histocompatibility complex cell surface proteins determines histocompatibility (self vs nonself) Presents protein fragments to leukocytes

Plant defenses against pathogens Barrier defenses infection triggers chemical responses adjacent cells are destroyed

Plant defenses against pathogens include molecular recognition systems Shared between cells Plants do not have mobile immune cells like mammals Evolved innate, specific responses More details later…

Cellular Processes and structure 04 Homeostasis Exchange of energy/matter Homeostatic mechanisms Defense against infection

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.