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Vett 113 WK 2
Intro to diseases NOTES
| Question | Answer |
|---|---|
| Disease | a pathological condition of body parts or tissues characterized by an identifiable group of signs and symptoms. |
| Infectious disease | disease caused by an infectious agent such as a bacterium, virus, protozoan, or fungus that can be passed on to others. |
| Infection | occurs when an infectious agent enters the body and begins to reproduce, that may or may not lead to a disease. |
| Pathogen | an infectious agent that causes disease. |
| Host | An organism infected by another organism |
| Virulence | the relative ability of an agent to cause rapid and severe disease in a host. |
| How many people have died of AIDS? | Close to 20 million people |
| What are the infectious agents that cause disease called? | Microbes or microorganisms due to their size |
| What are the different types of agents that cause disease? | Bacteria, Viruses, Protozoa (Protists), Fungi, Helminths (animals) |
| What are the top agent killers? | HIV, Aids, Malaria, and tuberculosis. |
| What are examples of bacteria disease? | Strep throat, pneumonia, and tuberculosis. |
| What are examples of virus diseases? | The flu, AIDS, and chickenpox. |
| What are examples of protozoa diseases? | Malaria |
| What are examples of fungi diseases? | Sinusitis and other skin diseases |
| What are examples of helminths diseases? | Parasitic worms. |
| How can a disease be transmitted? | Through the air. body fluids. Direct contact with contaminated objects. Contaminated food. By animal vectors such as bats, insects or birds. |
| What are "signs" of an infection? | Signs of an infectious disease are characteristics that can be observed by examining a patient. Fever, coughing, vomiting or rashes. |
| What are "symptoms"? | These can only be felt by the patient. Such as a headache, pain or nausea. |
| What is the Incubation Period? | The time between when a person first becomes infected with an agent and the appearance of signs and symptoms. They may be unaware they are infected but are already contagious. |
| What is the Prodromal phase | Mild, non specific symptoms that signal onset on some disease. |
| What is the Clinical Phase | The person experiences the typical signs and symptoms of disease. Most intense symptoms. |
| What is the Decline Phase | Subsidence of symptoms. |
| What is the Recovery phase? | Symptoms have disappeared , tissue is healed, and the body regained strength. |
| How are infectious diseases classified? | Duration, location, and timing |
| What is an Acute disease? | Develop and run its course quickly, such as the common cold. |
| What is a chronic disease? | They develop slow and is usually less severe, but may persist for a long period of time. (Tuberculosis) |
| What is a latent disease? | Characterized by periods of no symptoms between outbreaks of illness. Examples are cold sores caused by herpes that can recur after many years. |
| What is a local disease? | Confined to a specific area of the body. |
| What is a systemic disease? | Generalized illness that infects most of the body with pathogens distributed widely in tissues. |
| What is a primary disease? | initial infection in a previously healthy person |
| What is secondary disease? | infection that occurs in a person weakened by a primary infection. |
| How do infectious agents cause diseases? | Production of poisons, such as toxins and enzymes that destroy tissue and cells. Direct invasion and destruction of host cells. Triggering responses from the hosts immune system leading to disease signs and symptoms. |
Created by:
jennjenn1
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