In this video learners view the valves and chambers of the heart.

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

In this animated and interactive object, learners identify the valves and chambers of the heart.

In this animated object, learners are introduced to the structure and function of animal cell organelles.

In this learning activity you'll study the structure of the cell membrane and construct it using the correct molecules.

In this animated object, learners view molecules as they collide and move between two different solutions. They also observe what happens when the temperature of the solutions is raised or lowered.

In this animated object, learners examine water molecules moving through a semipermeable membrane.

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

In this learning activity you'll review how every protein molecule of an organism is synthesized by that organism in a prescribed process. This activity helps students understand the fundamental life process of making protein.

In this animated object, learners examine neutral fats, phospholipids, and cholesterol. The molecular formula and general function for each are shown.

In this interactive and animated object, learners read a description of the number, name, and function of the cranial nerves. A matching quiz completes the activity.

In this animated and interactive object, learners examine how blood flows through the heart and lungs. A brief quiz completes the activity.

In this animated and interactive object, learners examine ventilation, external and internal respiration, and gas transport.

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 animated object, learners read an introduction to protein structure and function.

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

Explore what proteins are, their structure, and their functions.

In this animated object, learners examine the eight cranial bones, the fourteen facial bones, and the ribs.

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.

Explore what passive transport diffusion is and how it moves water through a membrane.

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

In this animated object, learners examine neutral fats, phospholipids, and cholesterol. The molecular formula and general function for each are shown.

Learners examine the structure and function of skin including the production of melanin.

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

In this video you'll study the structure of the cell membrane and construct it using the correct molecules.