Immune System: Innate and Adaptive Immunity Explained
The immune system (or immunity) can be divided into two types - innate and adaptive immunity. This video has an immune system animation. The innate immune system consists of defenses against infection that are activated instantly as a pathogen attacks. Adaptive immunity (or acquired immunity) is a subsystem of the immune system that contains highly specialised systemic cells and processes that kill pathogens and prevent their growth in the body. Innate vs adaptive immunity: it’s important to realize that innate and adaptive immunity are different. Their differences are explained in the video in layman terms.
Our immune system is a fascinating entity, that functions in quite a unique and efficient manner. Comprising of various types of cells, it is prepared for any kind of breach in the fortress of our body, and is equipped to fight off a staggering number of intruders.
In this video, we give you a brief overview of the immune system, and the basic types of cells involved, along with the function they carry out.
Each cell if the immune system carries out various roles, depending on the kind of threat the body is facing. However, they have certain basic roles which have been explained here.
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Explore the basics about the immune system with The Amoeba Sisters! This video talks about the three lines of defense and also compares cell-mediated response with the humoral response.
Clark, M. A., Douglas, M., & Choi, J. (2018). Biology 2e. Houston, TX: Biology Stax.
Reece, J. B., & Campbell, N. A. (2011). Campbell biology. Boston: Benjamin Cummings / Pearson.
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Immune System, Part 1: Crash Course A&P #45
Our final episodes of Anatomy & Physiology explore the way your body keeps all that complex, intricate stuff alive and healthy -- your immune system. The immune system’s responses begin with physical barriers like skin and mucous membranes, and when they’re not enough, there are phagocytes -- the neutrophils and macrophages. It also features the awesomely named natural killer cells and the inflammatory response, and we'll explain how all of these elements work together to save the day if you happen to slip on a banana peel.
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Physical Barriers Like Skin and Mucous Membranes 2:01
Phagocytes: Neutrophils and Macrophages 3:17
Natural Killer Cells 4:29
Inflammatory Response 5:29
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IMMUNE SYSTEM MADE EASY- IMMUNOLOGY INNATE AND ADAPTIVE IMMUNITY SIMPLE ANIMATION
The immune system is the basic defence system of the body that protects us from harmful pathogens and diseases.
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The immune system consists of various types of cells and different proteins that kill the harmful invading micro-organisms and protect our body from disease.
In this video we will discuss about the human immune system. What is the basic structure of the Human Immune system and how it functions
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Pathogens can rapidly evolve and adapt, and thereby avoid detection and neutralization by the immune system; however, multiple defense mechanisms have also evolved to recognize and neutralize pathogens. Even simple unicellular organisms such as bacteria possess a rudimentary immune system in the form of enzymes that protect against bacteriophage infections. Other basic immune mechanisms evolved in ancient eukaryotes and remain in their modern descendants, such as plants and invertebrates. These mechanisms include phagocytosis, antimicrobial peptides called defensins, and the complement system. Jawed vertebrates, including humans, have even more sophisticated defense mechanisms,[1including the ability to adapt over time to recognize specific pathogens more efficiently. Adaptive (or acquired) immunity creates immunological memory after an initial response to a specific pathogen, leading to an enhanced response to subsequent encounters with that same pathogen. This process of acquired immunity is the basis of vaccination.
The immune system protects organisms from infection with layered defenses of increasing specificity. In simple terms, physical barriers prevent pathogens such as bacteria and viruses from entering the organism. If a pathogen breaches these barriers, the innate immune system provides an immediate, but non-specific response. Innate immune systems are found in all plants and animals. If pathogens successfully evade the innate response, vertebrates possess a second layer of protection, the adaptive immune system, which is activated by the innate response. Here, the immune system adapts its response during an infection to improve its recognition of the pathogen. This improved response is then retained after the pathogen has been eliminated, in the form of an immunological memory, and allows the adaptive immune system to mount faster and stronger attacks each time this pathogen is encountered.
The complement system is a biochemical cascade that attacks the surfaces of foreign cells. It contains over 20 different proteins and is named for its ability to complement the killing of pathogens by antibodies. Complement is the major humoral component of the innate immune response. Many species have complement systems, including non-mammals like plants, fish, and some invertebrates.
In humans, this response is activated by complement binding to antibodies that have attached to these microbes or the binding of complement proteins to carbohydrates on the surfaces of microbes. This recognition signal triggers a rapid killing response. The speed of the response is a result of signal amplification that occurs after sequential proteolytic activation of complement molecules, which are also proteases. After complement proteins initially bind to the microbe, they activate their protease activity, which in turn activates other complement proteases, and so on. This produces a catalytic cascade that amplifies the initial signal by controlled positive feedback. The cascade results in the production of peptides that attract immune cells, increase vascular permeability, and opsonize (coat) the surface of a pathogen, marking it for destruction. This deposition of complement can also kill cells directly by disrupting their plasma membrane
Innate and adaptive immunity | immune system of human body lecture
Immune system of human body | innate and adaptive immunity lecture - this immunology lecture explains about the innate and adaptive immunity in human body and the role of innate and adaptive immune response to fight against infections and pathogens.
Innate immunity is the fast response against pathogen with cell mediated immunity and it's less specific. While adaptive immunity takes some time to develop but it is more effective and much more specific.
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Thank you for watching the immunology lecture on innate and adaptive immunity.
immune - immune system made easy- immunology innate and adaptive immunity simple animation
immune - The immune system is a host defense system comprising many biological structures and processes within an organism that protects against disease
Introduction to the immune system
What is the immune system? The immune system is made up of organs, tissues, cells, and molecules that all work together to generate an immune response that protects us from microorganisms, removes toxins, and destroys tumor cells.
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IMMUNOLOGY- Innate Immunity and Adaptive Immunity (FL-Immuno/01)
Topics covered in this video lecture are:
0:49 Immune System
1:22 Immune Response
Types of Immunity:
2:57 Innate Immunity,
8:04 Adaptive Immunity
12:31 What if Immunity fails?
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Immunology General Review: innate and adaptive immunity
This comprehensive animated video covers in 20 minutes most aspects of immune system. It goes through both innate and adaptive immune systems and the interaction between them.
Innate immunity system components are physical barriers, cellular components and non cellular components
Adaptive immune system include both antibody mediated and cell mediated immunity.
Immunology - Adaptive Immune System
Understanding the Immune System in One Video
This video provides a visual overview of the immune system.
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Immunology | Immune System: Overview
Join us in this overview on the immune system where we have a brief discussion on the inflammatory process and adaptive immunity.
Inflammatory Response Video Series:
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Cells of the Immune System (Brittany Anderton)
Brittany Anderton provides an overview of the major cells of the human immune system.
The immune system is responsible for fighting infection and disease. It is comprised of many specialized cell types, all which work together to keep people healthy. In this short video, Dr. Brittany Anderton introduces the cells of the immune system. She compares and contrasts innate and adaptive immunity, and lays out the molecular interactions required to activate each type of response.
Dr. Brittany Anderton obtained her PhD in biomedicine from UCSF in 2015. After that, she did a non-traditional postdoc at UC Davis where she studied the teaching and communication of biotechnology. Brittany has served as adjunct faculty at UC Davis and CSU Sacramento, where she taught introductory biology courses. At iBiology, she seeks to improve the teaching and communication of science using evidence from the learning and social sciences.
Innate Immunity and Acquired immunity | Adaptive Immunity | Immune System | Don't Memorise
Did you know that our bodies know to fight off certain infections right since birth? Yes! There are certain invaders which can be fought off without prior encounters. It is known as Innate immunity. Our Immune system also adapts itself according to the environmental changes. And this type of immunity is known as Acquired immunity or Adaptive Immunity.
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Human Physiology - Innate Immune System
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Overview of the Immune System
- This video gives a great overview of the cells and functions of the immune system in response to a pathogen. Both the innate and adaptive immune system are explored. This video is a good starting point for the other Handwritten Tutorials Immunology videos. For more entirely FREE tutorials and accompanying PDFs visit
The Innate and Adaptive Immune Systems - Vaccine Makers Project
The human body's defense against infectious disease. Learn more at
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The Immune System: Innate Defenses and Adaptive Defenses
There are so many critters out there, bacteria and viruses that want to wreak havoc in our bodies. How do we defend ourselves against such tiny threats? The immune system! This is quite possibly the most profoundly remarkable aspect of the human body. It almost defies comprehension, the resourcefulness and efficiency of this system. An in-depth analysis will require an entire separate immunology course which will come in the future, let's just get our feet wet for the moment!
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Immunology | Adaptive Immunity
Join us in this video where we discuss adaptive immunity. These will include humoral and cell mediated immunity. We describe b-cells, plasma cells, antigen presenting cells, cytotoxic T cells, and T helper cells.
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