In this animated and interactive object, learners examine the structure and functions of granulocytes and agranulocytes. Two exercises complete 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.

Learners read about five different fractures of the hip and the treatments used.

Explore the step-by-step procedures to rescue and care for electrical shock victims.

In this animated object, students observe how ATP energy is used to move substances across the cell membrane from an area of lower concentration to an area of higher concentration and when something too large needs to get in or out of a cell.

In this learning activity you'll review the structure and function of the different tissues of the human body.

Learners read a brief description of the vertebral column and examine the distinctive features of the cervical, thoracic, and lumbar vertebrae.

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

Learners examine the location, structure, and function of the unipolar and multipolar neurons.

In this learning object, students will learn about the attachment

process of specific sugars to red cell membranes and how the sugars

determine ABO antigenic activity.

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 screencast, the learner identifies the kidney's internal and external structures.

In this animated object, learners read a brief description of the roles of the hypothalamus, emotions, and adrenal secretions during the stress response.

In this screencast, we'll view the 10 major bones of the skull and read a description of each bone.

In this interactive object, learners review the major parts of the skeletal system by clicking on the correct term as each bone or joint is highlighted on a skeleton.

In this interactive object, learners examine the structure and function of the sense of taste.

In this animated object, learners trace the olfactory pathway from the nasal cavity to the olfactory cortex.

In this screencast, learners read about the parts of the eye.

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

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

In this screencast, students view a basic wheelchair and identify its parts.

In this interactive object, learners examine the locations of major body cavities and their protective membranes. A drag-and-drop exercise completes the activity.

In this animated object, learners examine the major events that occur at the neuromuscular junction.

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

In this lesson on atomic structure, learners examine how the binding energy of electrons affects light production in certain phosphors used in x-rays.