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Ch 13: Overview of Diseases & Pathogens

About This Chapter

In this chapter on diseases and pathogens, you will get to know the definition and examples of the chain of an infection. You will learn about the treatment and prevention of malaria as well as diseases that are unaffected by antibiotics.

Overview of Diseases & Pathogens - Chapter Summary

The ways in which disease progresses from infection all the way through a carrier's recovery is a topic in this chapter on diseases and pathogens. Examine the terminology used when looking at the immune system from a cellular level, and study the mechanisms that allow the membrane of the cell to help maintain homeostasis.

Get familiar with both characteristics and diseases that can be passed on from parent to child, and explore environmental change that has been linked to emerging diseases. Also look at:

  • Definitions, the types and the causes of disease and pathogens
  • The resistance of pathogens to antibiotics
  • Pathogens that are multi-drug resistant, and MRSA
  • Symptoms, causes and treatments of polio
  • Examples of homeostasis
  • Names of some disease types
  • Types of emerging diseases caused by changes in the environment
  • The definition, types and examples of neoplasia

These short lessons are easy to complete whenever you have a little time. They're portable since they're accessible online. This means that you can learn more about diseases and pathogens using a tablet, laptop or even a smartphone. We include a quiz with each lesson as a self-assessment to test your understanding of the material you are studying.

14 Lessons in Chapter 13: Overview of Diseases & Pathogens
Test your knowledge with a 30-question chapter practice test
Chain of Infection: Definition & Example

1. Chain of Infection: Definition & Example

Infectious disease results from the interaction of an agent, a host, and an environment. Most of these diseases follow a typical chain of infection that ends with an infected host. Understanding the chain of infection can help with both the prevention and treatment of infectious diseases.

Progress of Disease: Infection to Recovery

2. Progress of Disease: Infection to Recovery

This lesson will teach you about the five basic steps of the development of disease, what they are called, and what occurs during each phase. We'll talk about the incubation and prodromal period as well as the periods of convalescence, decline, and illness.

Pathogens and Disease: Definitions, Types & Causes

3. Pathogens and Disease: Definitions, Types & Causes

There are many different types of pathogens and many problems they cause. This lesson will teach you about four main types of pathogens, examples of each, and what problems they cause.

Pathogens: Antibiotic Resistance and Virulence

4. Pathogens: Antibiotic Resistance and Virulence

Find out more about how the overuse of antibiotics could lead to some serious problems with epidemics or untreatable diseases in the future. You can also discover some of the things that make pathogens harmful and why pathogens don't cause disease in every species they infect.

MRSA and Multi-Drug Resistant Pathogens

5. MRSA and Multi-Drug Resistant Pathogens

We've learned a lot about different kinds of antibiotics and how they work. But there are some pathogens that virtually no antibiotics work against. In this lesson, we learn about two of these pathogens, and how they threaten to take us back to a pre-antibiotic era.

Malaria: Prevention and Treatment

6. Malaria: Prevention and Treatment

In this lesson examining malaria, we will look at the impact of the disease in the U.S. and the major methods of preventing the disease. We will also discuss how to correctly treat patients stricken by malaria.

Polio: Causes, Symptoms, and Treatments

7. Polio: Causes, Symptoms, and Treatments

This lesson will describe a crippling disease known as polio. We will discuss its history, signs, symptoms, treatment, prevention strategies, who is most likely to get this disease and why this may be the case.

The Immune System at the Cellular Level: Terminology

8. The Immune System at the Cellular Level: Terminology

This lesson defines several terms related to the microscopic aspects of the immune system: immunity, lymphocytes, B cells, T cells, macrophages, dendritic cells, complements, interferon, and lymphokines.

Maintaining Homeostasis: Importance & Examples

9. Maintaining Homeostasis: Importance & Examples

Have you ever heard of the term 'homeostasis'? In this lesson you will learn the definition of homeostasis and discover why maintaining it is so important to the life of any organism.

What Are the Types of Diseases?

10. What Are the Types of Diseases?

This lesson will focus on the different types of diseases that a person may develop or contract. We'll discuss the differences between acute, chronic, primary, secondary, local, and systemic diseases.

Heritable Characteristics & Diseases

11. Heritable Characteristics & Diseases

Have you ever wondered how traits are passed on from one generation to the next? In this lesson we will discuss this process, as well as some specific traits and diseases that can be passed from parent to offspring.

Disease-Causing Agents in the Environment: Definition and Types

12. Disease-Causing Agents in the Environment: Definition and Types

In this video lesson, you will identify different disease-causing agents. You will also explore examples of types of disease-causing agents and their effects on human health.

Emerging Diseases Linked to Environmental Change

13. Emerging Diseases Linked to Environmental Change

In this video lesson, you learn about why some diseases are increasing on Earth due to environmental changes. You'll also see examples of different types of diseases that are responding to environmental changes and how they are becoming more prevalent.

What is Neoplasia? - Definition, Types & Examples

14. What is Neoplasia? - Definition, Types & Examples

This lesson will discuss the concept of neoplasia. We'll specifically talk about the differences between benign tumors, carcinoma in situ, and malignant tumors. This lesson will also define metastasis and oncology and show examples of different types of malignant and benign tumors.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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