The Actions of Hormones
By Barbara Liang
In this animated object, learners compare the mode of action of steroids with the action of amino acid-based hormones.
The Sense of Smell
In this animated object, learners trace the olfactory pathway from the nasal cavity to the olfactory cortex.
The Fungi Kingdom: Common Characteristics of Fungi
Learners examine what defines a fungus and read how fungi differ from animals and plants.
Protein Synthesis (Video)
By Becky Polk-Pohlman
In this video, you'll review how every protein molecule of an organism is synthesized.
The Cell: Passive Transport Diffusion (Video)
Explore what passive transport diffusion is and how it moves water through a membrane.
In this animated activity, learners examine the two major phases of cell division: mitosis and cytokinesis.
Regional Body Parts
By Gerald Heins
In this interactive object, learners identify a person's regional body parts.
Nervous and Epithelial Tissue
In this colorful, interactive object, learners examine nervous and epithelial tissue composition and function. A quiz completes the activity.
Helpful Microbes in Your Daily Life
By Elizabeth Yoon
Learners read how microbes in such items as yogurt, bread, insulin, and insect sprays improve our lives.
The Upper and Lower Motor Neurons
In this animated object, learners examine the function and location of the motor neurons and the damage that can result when they are injured.
The Juxtaglomerular Apparatus
In this animated and interactive object, learners examine the location, structure, and function of the juxtaglomerular (JG) apparatus.
The Organization of the Human Body: Body Cavities
In this interactive object, learners examine the locations of major body cavities and their protective membranes. A drag-and-drop exercise completes the activity.
Physiological Events at the Neural Synapse
In this learning activity you'll review information on the neural synapse.
The Food Pyramid
By Michele Williams
In this learning activity you'll explore the food pyramid and the recommended services.
The Four Types of Chemical Reactions
In this animated object, learners examine synthesis, decomposition, exchange, and reversible reactions.
The Stress Response
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 learning activity you'll review the structure and function of the different tissues of the human body.
Lifecycles of Animals and Plants
In this animated activity, sexual reproduction in animals is contrasted with the alternation of generation lifecycle of plants.
Respiratory System Gas Exchange
By Bruce Forciea
In this animated object, learners examine the mechanisms for gas exchange among the lungs, blood, and tissues.
The Sense of Sight
In this animated and interactive object, learners read about the parts of the eye. A short quiz completes the activity.
Biomolecules: The Proteins (Video)
Explore what proteins are, their structure, and their functions.
Classification of Joints
In this animated object, learners examine the different types of joints and their movements.
The Plant Kingdom: An Introduction
Learners read about the mutations that occurred in plants for the successful transition from an aquatic to a terrestrial existence. The classification of plants is based on these adaptive structures.
Anatomical Terminology: Relative Position Video
Students identify the various regions of the human body through video.
The Unipolar and Multipolar Neurons
Learners examine the location, structure, and function of the unipolar and multipolar neurons.