At the end of this lesson you will be able to

- Explain what biosecurity means.

- Describe why biosecurity is important.

- Identify what kinds of disease agents we try to prevent or control with biosecurity.

- Demonstrate disease agent-host-environmental interactions that result in disease.

In this module, you'll be able to :

- Identify five routes of infection

- Describe how diseases are transmitted in animals

By the end of this module, you'll be able to:

- Identify actions that can reduce biosecurity risk

- Develop a biosecurity action plan for a farm

- Select the most cost effective strategies

Students read about the basic organization and structure of the periodic table of elements. By clicking on the symbol, they can read that element's atomic number and weight. In an exercise, students identify elements as belonging to a group, a period, or neither.

Learners listen to an explanation of how to perform an inventory of a farm business. They then list their hard assets and human resources by completing worksheets that they save to their personal computers.

Students view diagrams of nails and read the client's nail history. They then determine if the affected nail has a disease or a disorder and recommend salon treatment and home care.

Learners complete two exercises. In the first quiz, they divide viruses into two categories: RNA and DNA. They later match each virus with the disease it causes.

In this interactive and animated object, learners examine the action of insulin and other antidiabetic medications. In a drag-and-drop exercise, learners match oral agents with the action they perform. In a separate activity, learners answer questions about the onset of action for different types of insulin.

Learners use peripheral vascular assessment data to examine characteristics of these four conditions: peripheral arterial disease, deep vein thrombosis, chronic venous insufficiency, and acute arterial occlusion. A matching exercise completes the learning object.

Can you guess the respiratory term described by the accompanying phrase?

Learners complete a crossword puzzle with terms that relate to common diseases and disorders of the ear.

20 Facts about diseases to prepare for the quiz!

You'll be introduced to what you need to know about taking care of trees.