In this animated activity, learners examine how organs are visualized in three dimensions. The terms “longitudinal,” “cross,” “transverse,” “horizontal,” and “sagittal” are defined. Students test their knowledge of the location of abdominal pelvic cavity organs in two drag-and-drop exercises.

In this interactive object, learners examine the neuron pathway into and out of the spinal cord. They complete the activity by testing their knowledge of vocabulary and the location of spinal cord structures.

In this highly animated and colorful object, learners examine the steps of carbohydrate digestion. A brief quiz completes the activity.

In this animated and interactive object, learners examine the lifecycle of fungi including asexual and sexual reproduction. Learners test their knowledge by identifying a diagram and by completing a crossword puzzle.

In this interactive object, learners match the bacterial etiologic agent to the disease it causes.

In this learning activity you'll observe information and formulate an evaluation that includes diagnosis and microorganism identification.

In this animated object, learners examine the various connective tissue layers of the muscle organ. The terms "prime mover," "synergist," "antagonist," "origin," and "insertion" are defined.

In this interactive object, learners review the case of a patient with meningococcal meningitis.

In this animated object, learners examine the different types of joints and their movements.

In this animated object, learners examine the function and location of the motor neurons and the damage that can result when they are injured.

Learners match diseases with their portals of entry, causative agents, and associated vectors.

In this animated and interactive object, learners read about the parts of the eye. A short quiz completes the activity.

Students choose the hypothesis and practice describing bacterial colonies using the steps of the scientific method.

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

In this interactive object, learners categorize different metabolic activities as catabolic or anabolic and follow a glucose molecule through the processes of glycolysis, aerobic respiration, and fermentation.

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

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

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

Learners read how microbes in such items as yogurt, bread, insulin, and insect sprays improve our lives.

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

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