Teenage Brains. Although you know your teenager takes some chances, it can be a shock to hear about them.
One fine May morning not long ago my oldest son, 17 at the time, phoned to tell me that he had just spent a couple hours at the state police barracks. Le cerveau à tous les niveaux. Generation of an Action Potential. Action Potential Animation Simulation, Online Psychology Laboratory. 4402s.swf (application/x-shockwave-flash Object) Physiological Events at the Neural Synapse. Actionpotential_short.swf (application/x-shockwave-flash Object) Dissecting Brains. Cow’s Eye Dissection. Science Friday Video: Laser Eye Surgery in Six Minutes.
Chapter 9: Limbic System. The limbic system is a convenient way of describing several functionally and anatomically interconnected nuclei and cortical structures that are located in the telencephalon and diencephalon.
These nuclei serve several functions, however most have to do with control of functions necessary for self preservation and species preservation. They regulate autonomic and endocrine function, particularly in response to emotional stimuli. They set the level of arousal and are involved in motivation and reinforcing behaviors. Additionally, many of these areas are critical to particular types of memory. Micturition Reflex. Animated Brain Samples: Patellar Reflex. Human Physiology - Neurons & the Nervous System. The human nervous system consists of billions of nerve cells (or neurons)plus supporting (neuroglial) cells.
Neurons are able to respond to stimuli (such as touch, sound, light, and so on), conduct impulses, and communicate with each other (and with other types of cells like muscle cells). Nervous system The nucleus of a neuron is located in the cell body. Extending out from the cell body are processes called dendrites and axons. These processes vary in number & relative length but always serve to conduct impulses (with dendrites conducting impulses toward the cell body and axons conducting impulses away from the cell body). Neurons can respond to stimuli and conduct impulses because a membrane potential is established across the cell membrane.
With one electrode placed inside a neuron and the other outside, the voltmeter is 'measuring' the difference in the distribution of ions on the inside versus the outside. Establishment of the Resting Membrane Potential Source: Neurocytology. Professor Alfred Cuschieri Department of Anatomy, University of Malta.
Neurons, Synapses, Action Potentials, and Neurotransmission (Overview) Introduction to Neurons, Synapses, Action Potentials, and Neurotransmission This module is an introduction to the structure and function of neurons, how they generate action potentials, and how they "communicate" with other neurons (neurotransmission) via synapses.
This module includes flash animations illustrating the difference between electric synapses and chemical synapses, conduction, electrical neurotransmission, and "classic" chemical neurotransmission. Neurons, Synapses, Action Potentials, and NeurotransmissionAn introduction to the structure and function of neurons, as well as how neurons communicate both electrically and chemically. A number of people have requested that each animation open in a blank window rather than be embedded within the text. Credits: Funding This module was supported by National Science Foundation Grants #9981217 and #0127561.
Neuroplasticity. The brain is without doubt our most fascinating organ.
Parents, educators, and society as a whole have a tremendous power to shape the wrinkly universe inside each child’s head, and, with it, the kind of person he or she will turn out to be. We owe it to our children to help them grow the best brains possible. —Lise Eliot, What is Going in There? ■ Parents and educators are among the most voracious consumers of the latest research about the brain, searching for strategies to enhance learning and brain development.
University MCB/HHMI High School Science Outreach Program: Lesson Plans. The following resources were developed for classroom use by high school biology teachers who participated in MCB-HHMI Outreach's Summer 2005 "Experimental Biology and Multimedia Workshop".
This year's topic was "Neuroscience". Keep in mind that lesson formats vary greatly because each was developed with a particular classroom in mind. All lessons align with state and national science standards as described within the lesson or in an accompanying file. Please Note: Viewing any videos requires that you have the free Apple Quicktime Player installed on your system. If you would like to view pdf files in your browser window prior to downloading be sure to load the Adobe Acrobat Reader plugin. Human Benchmark - Reaction Time Test. Interactive Activity: Nervous System Review. Illusions Reveal the Brain's Assumptions. A Science Odyssey: Probe the Brain: History. What would you do if you were a doctor and had patients who were missing pieces of their skulls?
If you were Eduard Hitzig, a German doctor working at a military hospital in the 1860s, you'd conduct some experiments. Hitzig, working on patients who had pieces of their skulls blown away in battle, stimulated exposed brains with wires connected to a battery. By doing so, he discovered that weak electric shocks, when applied to areas at the back of the brain, caused the patients' eyes to move. Sheep Brain Dissection: The Anatomy of Memory. Neuroanatomy Tutorial. The Whole Brain Atlas.
Science & Nature - Human Body and Mind - Body - Senses Challenge. Action_potential_cartoon.swf (application/x-shockwave-flash Object) Index.swf (application/x-shockwave-flash Object)