Label the Dental X-ray Tubehead (Screencast)
By Joan Rohrer
The tubehead is a sealed, heavy metal housing that contains the x-ray tube that produces dental x-rays. This learning object will provide students with practice identifying and labeling the dental x-ray tubehead.
Learners read about audiological tests including pure tone testing, air conduction, bone conduction, Speech Reception Threshold, and Speech Discrimination Score. They listen to sounds and words recorded at different decibel levels and see a graphic representation of decibel ranges. A brief review concludes the activity.
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.