Khan Academy: Types of Catalysts

Sal illustrates the different types of decay: Alpha, Beta, Gamma Decay and Positron Emission. [17:00]

Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for...

Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for...

Learn about two different types of neurotransmitter receptors - ionotropic and metabotropic. [6:36]

There are three major types of hormones. 1) Protein hormones (or polypeptide hormones) are made of chains of amino acids. An example is ADH (antidiuretic hormone) which decreases blood pressure. 2) Steroid hormones are derived from...

Someone with Cerebral Palsy can fall along a wide spectrum of movement based on where the brain damage occurred and how severe it is. This video describes a type of Cerebral Palsy referred to as Dyskinetic or Ataxic. [7:19]

Someone with Cerebral Palsy can fall along a wide spectrum of movement based on where the brain damage occurred and how severe it is. This video describes a type of Cerebral Palsy referred to as spastic. [7:27]

What interventions can be made in treating a stroke? Khan Academy answers this question. [7:10]

Learn how animal communication is involved in the social behavior of animal groups with this video. [8:57]

Millions of neurotransmitters can be categorized in multiple ways. This video explains the most common way to categorize, which is by their molecular structure. [8:45]