Ascending Tract: The Posterior White Columns
By Barbara Liang
In this animated activity, learners view the pathways and functions of the fasciculus gracilis and the fasciculus cuneatus.
Muscle Cell Contraction
In this animated activity, learners examine muscle cell contraction and relaxation and consider the role of calcium ions.
The Neuromuscular Junction
In this animated object, learners examine the major events that occur at the neuromuscular junction.
Biomolecules: The Carbohydrates (Video)
By Becky Polk-Pohlman
Viewers watch an introduction to monosaccharides, disaccharides, and polysaccharides. The processes for dehydration synthesis and hydrolysis.
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 Autonomic Nervous System - Sympathetic Division
Learners examine the function and wiring of the sympathetic nervous system.
The Upper and Lower Motor Neurons (Screencast)
In this screencast, learners examine the function and location of the motor neurons and the damage that can result when they are injured.
Protein Synthesis (Video)
In this video, you'll review how every protein molecule of an organism is synthesized.
The Vascular System of the Kidneys
Learners play a vascular system "game" to identify the arteries, capillaries, and veins that make up the renal blood supply pathway. A score is given at the end of the activity.
The Juxtaglomerular Apparatus
Explore the location, structure, and function of the juxtaglomerular (JG) apparatus.
The Corticospinal Tracts
In this animated object, learners examine the major descending tracts of the nervous system. A matching exercise completes the activity.
The Electrocardiogram (Screencast)
In this animated object, learners view the "T" and "P" waves and the "QRS complex." A brief quiz completes the activity.
Antigen Presentation: T and B Cell Differentiation
By Carol Parent-Paulson
This learning object demonstrates the process by which antigens are identified, processed, and presented to mediators of the cellular immune system.