Disease :Disease “He himself bore our sins in his body on the tree, so that we might die to sins and live for righteousness; by his wounds you have been healed” 1 Peter 2:24


At the end of this lecture you will be able to… :At the end of this lecture you will be able to… Identify some diseases Identify and describe the FACE of disease Classify disease into 2 categories Begin to identify some responses of the body to infection


Checkpoint 1: Disease :Checkpoint 1: Disease What makes a disease a disease? What are some diseases?


What is disease? :What is disease? Disease is a condition that Function impaired A series of recognizable symptoms Cause known Evaluation for identification


Types of disease :Types of disease Non-infectious diseases Genetic or hereditary e.g. hemophilia Congenital e.g. fetal alcohol syndrome Environmental e.g. anemia Not transmitted by a microorganism Not contagious


Hemophilia :Hemophilia People are missing the protein that makes their blood clot Bruises become hematomas Cuts can be life threatening


Anemia :Anemia Lack of iron in the diet causes reduction in red blood cells Tiredness, shortness of breath, heart failure


Checkpoint 2 :Checkpoint 2 What are two types of non-infectious diseases? What causes them? Describe the impact of non infectious disease on our society?


Types of disease con’t ….. :Types of disease con’t ….. Infectious diseases Bacterial e.g. cholera Viral e.g. chicken pox Fungal e.g. tinnea Parasitic e.g. malaria Transmitted by a microorganism Contagious


Chicken Pox :Chicken Pox Spots that become blisters Blisters contain fluid Blisters become itchy scabs


Cholera :Cholera Intestinal infection Diarrhea and severe dehydration Transmitted through contaminated water or food


Checkpoint 3: Disease :Checkpoint 3: Disease What is an example of an infectious disease? What are some of the symptoms of this disease? Describe an infectious disease that you have suffered from?


Pathogens :Pathogens Not all microorganisms cause disease Yeast: yoghurt Micro flora: healthy skin Pathogens are microorganisms which cause disease


How are pathogens transmitted? :How are pathogens transmitted? In the air In water In food In body fluids e.g. saliva By touching By another organism e.g. mosquito These transmitters are called vectors


How do pathogens make us sick? :How do pathogens make us sick? Bacteria produce poisons that kill our cells Viruses use our cells to reproduce and then the cell dies Fungi grow and produce toxins Parasites live and grow in our body destroying tissue


Checkpoint 4: Pathogens :Checkpoint 4: Pathogens Name a pathogen that you are familiar with. What are its effects? Describe your journey as a pathogen.


Virus Reproduction :Virus Reproduction


Parasite Activity :Parasite Activity Mosquito Attack Blood cell penetration Parasite Release


Body Response :Body Response First line of defense Physical barriers eg skin Second line of defense Cell attack Third line of defense immunity


Stop the Spread of Disease! :Stop the Spread of Disease! Preventing Infection Stopping the spread