How does your body defend itself against microbes?

Slides:

Advertisements

Similar presentations

B2 Keeping Healthy REVISION. How do our bodies resist infection? Harmful microorganisms reproduce quickly inside the body, because it is w______ and they.

Advertisements

Defenses Against Disease

What has happened when a cut in your skin becomes infected? What could have been done to prevent it?

Defence Against Disease

Let’s start with a story… In 1796 an English physician, Edward Jenner, attempted a very famous and risky experiment. In those days people used to die of.

Starter (from the end of last lesson) 1.What are the similarities between a virus and bacteria? 2. What are the main differences between a virus and bacteria?

Edward Jenner was born in As a young boy, Edward enjoyed science and nature spending hours on the banks of the River Severn looking for fossils.

The Lymphatic System.  The lymphatic system consists of : 1. Lymphatic Vessels that carry lymph (clear watery liquid formed from tissue fluid) 2. Lymph.

Pathogens  Microorganisms causing diseases  eg. bacteria viruses fungi protozoa.

Microbes and Disease WJEC Biology Module 3. Microbes and Disease How does the body defend itself against infectious disease? How does immunisation work?

By Anousheh. He was an English physician and scientist who was the pioneer of “Smallpox vaccine”. Smallpox was a deadly disease which had wiped out a.

Disease: Edward Jenner

The Immune System Protects The Human Body 3.1. Four Ways to Transmit Infectious Diseases  Direct Contact – shaking hands, sharing a drinking container.

© Oxford University Press 2009 These microbes got in through Will’s cut finger. Left unchecked they will reproduce rapidly and fill his blood and tissues.

15/09/2015 Unit B2 Keeping Healthy. 15/09/2015 Lesson 1: Microbes Lesson objectives: 1)To be able to list at least 4 ways through which microbes can enter.

The Immune System M. Stafford.

Lesson Overview Lesson Overview Fighting Infectious Disease Lesson Overview 35.3 Fighting Infectious Disease.

Microbes Revision Please have planners with you before you sit down! 22 nd January Learning objectives: What I am looking for is for you to be able to.

14/10/2015 Microbes and Disease W Richards The Weald School.

HEALTHY LIVING GERMS AND DISEASES Class 4JH Stanford School Laceby.

By: Diego Mora Eugenio Martin-Carreras. The immune system is a system of biological structures and processes within an organism that protects against.

Starter 1.Should you take Antibiotic for every illness? Why? No, Viruses cannot be killed by antibiotics 2.Why do people take painkillers when they have.

Immunity Your body’s defense against infection!. Immune System A group of organs and tissues that protect you from foreign invaders Skin Thymus gland.

1. The Body’s Natural Defences 2. White Blood Cells 3. Semmelweiss Isobel Houston.

 Both produce similar reactions, but smallpox is deadly, while cowpox isn’t.

The Immune System Protecting the Body. First Line of Defence The skin keeps out bacteria and viruses The skin keeps out bacteria and viruses Acidic oils.

Finishing Viruses + Monera Virus: Infection and Immune Response.

Section 4.  Objective  You will understand the functions of various body systems.

Fighting Disease Think pair share What is a disease? Use an example to help you answer.

35.3 Fighting Infectious Disease

The Immune System.

Revision Quiz Question 1 Which of the following is NOT carried out by a living organism? MovementGrowth ExcretionDisease.

L3: Defence Against Disease Learning Objectives: 1.Describe the body’s first line of defence against pathogens. 2.Explain how white blood cells deal with.

Learning Objective To be able to describe how we treat and prevent disease Key words: Medicine, Penicillin, antibiotics, immunisation, vaccine Starter.

FIGHTING DISEASE SBI 3C: OCTOBER DISEASE:  Pathogen:  A disease causing microorganism  Pathogenic bacteria produce toxins once they enter your.

Pathogens  Microorganisms causing diseases  eg. bacteria viruses fungi protozoa.

Defence against disease

The Immune System.

Immune Response Non-Specific Immunity. Non-Specific (Response is immediate and the same for all pathogens) Specific Response is slower and specific to.

Defence Against Disease  To understand how the body defends itself against disease Monday, June 06, 2016.

Do Now Quiz 1. What are antigens and where are they found? 2. What are antibodies and where are they made? 3. Explain the relationship between antigens.

Microbes L.O: To be able to name the three types of microbes and explain how they can cause disease. Starter: Name as many diseases as you can, do you.

Vaccines Combating Viruses. There are many different viral infections, most of which you have probably already heard of! List some viral infections that.

L3: Defence Against Disease

Defence Against Disease

20/05/2018 Microbes and Disease.

Learning Target: Identify the functions of the immune system

Fighting Disease Noadswood Science, 2016.

Aim: How does your body become immune (resistant) to disease?

Vaccines and body defenses

How was the first vaccine developed in the 18th Century?

DEFENCE AGAINST DISEASE

Starter Quiz 1. Where does the term Quackery come from?

23/11/2018 Microbes and Disease W Richards The Weald School.

30/11/2018 Microbes and Disease.

30/11/2018 Microbes and Disease W Richards Worthing High School.

Section 3.6 Protecting the body

Pgs Functions of the Immune System

Lesson Starter Explain how the skin protects the body

The Immune System.

Warm Up Why is mucous important and where is it specifically produced?

L2: Defence Against Disease

L2: Defence Against Disease

Key Area 3.5: Non-Specific Body Defences

Presentation transcript:

How does your body defend itself against microbes? Today we are learning: About the natural barriers we have to fight infection That we make antibodies and specialised cells in the blood to fight microbes Keywords: Hygiene, immunity, vaccination, antibodies. Starter: Complete your wordsearch of keywords Extension: What happens to your body when you catch a cold? Discuss in pairs.

Edward Jenner Many years ago there was a disease called SMALLPOX, people living in the countryside noticed that milkmaids never seemed to catch the deadly disease. This was because they were subjected to another similar infection caught from the cows they milked (cowpox).

Edward Jenner

Edward Jenner In 1796 a doctor called Edward Jenner carried out a famous experiment on an eight year old boy called James Phipps.

Edward Jenner Jenner took pus from someone with mild cowpox and put it into a cut in the eight year olds arm. He never caught smallpox, for many years after that Jenner conducted lots of experiments to prove that our bodies can become IMMUNE.

How does your body defend itself?

How does your body defend itself? Our bodies have many defence mechanisms against invading microbes: Tears contain an enzyme that kills bacteria The skin acts as a barrier The breathing organs produce mucus to cover the lining of these organs and trap the microbes Stomach produces stomach acid If our skin is cut platelets seal the wound by clotting

How does your body defend itself? Ear wax traps them On your outline of the human body, label how we stop micro-organisms getting into our bodies. Here is an example for you.

Next lesson… We are going to look at how we can kill bacterial. We need to grow some bacteria to look at next lesson. Listen carefully to your instructions and make sure you wear goggles!

End of lesson quiz Turn to the back of your book and put 1 to 10 in the margin. The questions will pop up, answer them as quickly as possible.

Quiz questions Name the 3 main types of microbes Which organ uses acid to kill microbes? What do white blood cells make to fight microbes? Name the doctor that experimented with smallpox What does engulf mean? 5 correct LEVEL 5 4 correct LEVEL 4 2-3 correct LEVEL 3 0-1 correct LEVEL 2