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Neuroplasticity, the brain's ability to adapt and change, plays a critical role in memory formation, learning, and recovery from injury. This process involves changes in synapses and neurons, …

But most of its membrane is actually wrapped around the axon as the myelin sheath. In addition to these functions, Schwann cells also appear to influence neurons, and vice versa, through …

Upper motor neurons (Opens a modal) Autonomic nervous system (Opens a modal) Human brain (parts & functions) (Opens a modal) Practice. Nervous system questions. 7 questions. …

Explore biology topics with Khan Academy, offering free resources to learn about cells, genetics, evolution, ecology, and more.

Zoom into the world of biomolecules as you explore the structure and function of proteins, nucleic acids, carbohydrates, lipids, ATP, and more! Explore some of the ways that these molecules …

One idea explaining why Alzheimer’s disease occurs is the forming of plaque sticking to the phospholipid bilayer of the brain neurons. These plaques block communication between the …

The medical world can be a confusing place. Patients, their families, and even students entering health fields might feel overwhelmed by the large vocabularies and complicated explanations. …

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This collection is being developed for the revised MCAT® exam that will first be administered in April 2015. The collection contains more than 1000 videos and 2800 practice questions. …