In this animated activity, learners examine hearing and balance. Detailed drawings of the outer, middle, and inner ear structures are included.

In this animated and interactive object, learners examine ABO blood antigens and Rh antigens and their compatibility.

In this learning object, you will learn about four blood osmolality and volume regulators, their sites of production, their sites of action, and the results of those actions.

Learners identify various therapeutic interaction strategies to be used when working with children and adolescents to enhance self-esteem, self-concept, self-worth, body image, and coping and communication skills.

Learners study two diagrams of the lymphatic system and then test their knowledge in drag-and-drop exercises.

In this activity, you will review proper apparel for working in a doctor's office.

Learners examine microscope images of blood agar and the various types of hemolysis that can be detected. A quiz completes the activity.

Students make observations and formulate an evaluation that includes diagnosis, microorganism identification, and treatment.

In this animated learning object, learners view how the fats that people eat are digested and absorbed.

Students identify the meaning of urinary system word parts to analyze and define medical terms.

Students view the 10 major bones of the skull and read a description of each bone.

In this animated learning object, learners examine the regulation of inducible operons in bacterial systems.

In this interactive object, learners identify a person's regional body parts.

Learners test their knowledge in this drag-and-drop exercise by identifying coding errors in health care claim cases.

Through the use of symbols and words, the learner reviews the etiologies, symptoms, and treatment of respiratory and metabolic acid-base disturbances.

Learners follow the path of a carbohydrate food from consumption through digestion to absorption into the bloodstream. In a matching exercise, students identify the main type of carbohydrate found in four different foods.

This learning object demonstrates the process by which antigens are identified, processed, and presented to mediators of the cellular immune system.

In this colorful and interactive object, learners examine the structure and function of muscle and connective tissues. A quiz completes the activity.

Learners watch a brief video clip. They then follow step-by-step instructions on how to do a urine colony count and examine the criteria for determining if a colony count represents an infection. A brief quiz completes the object.

In this animated activity, learners examine the components of the dental x-ray tube and how dental x-rays are generated.

In this interactive object, learners review the four types of hypersensitivity and check their knowledge of alternative names, mediators, and various antigens and disease conditions.

In this animated lesson, students read how reducing the thickness of a food is an important factor in cooling it. They also read FDA guidelines for food temperatures.

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.

In this learning activity you'll assemble the components of a prokaryotic cell and match the names and functions with each structure.

Learners answer questions about medication from a game board with the headings "Pituitary," "Thyroid," and "Adrenal." Up to three people can play at one time. Contestants "buzz in" their answers to accumulate points.