Biological Animations

atomic orbitals A 1s orbital holding 2 electrons would be drawn as shown on the right, but it can be written even more quickly as 1s2. This is read as "one s two" - not as "one s squared". You mustn't confuse the two numbers in this notation: The order of filling orbitals - the Aufbau Principle Aufbau is a German word meaning building up or construction. Electrons fill low energy orbitals (closer to the nucleus) before they fill higher energy ones. This filling of orbitals singly where possible is known as Hund's rule. The diagram (not to scale) summarises the energies of the orbitals up to the 4p level that you will need to know when you are using the Aufbau Principle. Notice that the s orbital always has a slightly lower energy than the p orbitals at the same energy level, so the s orbital always fills with electrons before the corresponding p orbitals. The real oddity is the position of the 3d orbitals. Knowing the order of filling is central to understanding how to write electronic structures.

Master Muscle List Home Page Les Clionautes : Histoire-G?o et TICE Brain Atlas - Introduction The central nervous system (CNS) consists of the brain and the spinal cord, immersed in the cerebrospinal fluid (CSF). Weighing about 3 pounds (1.4 kilograms), the brain consists of three main structures: the cerebrum, the cerebellum and the brainstem. Cerebrum - divided into two hemispheres (left and right), each consists of four lobes (frontal, parietal, occipital and temporal). The outer layer of the brain is known as the cerebral cortex or the ‘grey matter’. It covers the nuclei deep within the cerebral hemisphere e.g. the basal ganglia; the structure called the thalamus, and the ‘white matter’, which consists mostly of myelinated axons. – closely packed neuron cell bodies form the grey matter of the brain. Cerebellum – responsible for psychomotor function, the cerebellum co-ordinates sensory input from the inner ear and the muscles to provide accurate control of position and movement. Basal Ganglia Thalamus and Hypothalamus Ventricles Limbic System Reticular Activating System Neurons Glia

Royal Society The story of the Royal Society is the story of modern science. Our origins lie in a 1660 ‘invisible college’ of natural philosophers and physicians. Today we are the UK’s national science academy and a Fellowship of some 1,600 of the world’s most eminent scientists. Nullius in verba The very first ‘learned society’ meeting on 28 November 1660 followed a lecture at Gresham College by Christopher Wren. Joined by other leading polymaths including Robert Boyle and John Wilkins, the group soon received royal approval, and from 1663 it would be known as 'The Royal Society of London for Improving Natural Knowledge'. The Royal Society's motto 'Nullius in verba' is taken to mean 'take nobody's word for it'. Advancements and adventure The early years of the Society saw revolutionary advancements in the conduct and communication of science. We published Isaac Newton’s Principia Mathematica, and Benjamin Franklin’s kite experiment demonstrating the electrical nature of lightning. Independence

bodies-in-motion - scott-eaton.com 30 second sequences from BiM Not long ago, I had twelve artists from Natural Motion (of Morpheme and Clumsy Ninja fame) into Somerset House, my home away from home, for a four day anatomy workshop. At the end of each day we would take about 20 minutes to draw from the Bodies in Motion library. sketching from BiM We made extensive use of the timer for gesture drawing. It can be set to 10fps, 1fps, 30sec, 1min, 2min, or 5mins, and ticks down to zero before flipping to the next frame of the motion sequence. timelapse of a sequence of 30 second poses

Glutamate by Niels Chr. Danbolt For more references and more information, see: Danbolt, 2001: Prog. Neurobiol. 65, 1-105. Glutamate Outside the community of biomedical scientists, glutamate is probably best known as "monosodium glutamate" or "MSG" which is used as a flavor or taste enhancer in food. It is usually available together with other food additives and spices in most large food stores. Glutamate is the major excitatory transmitter in the brain The main motivation for the ongoing World Wide research on glutamate is due to the role of glutamate in the signal transduction in the nervous systems of apparently all complex living organisms, including man. Glutamate is toxic, not in spite of its importance, but because of it Glutamate does not only mediate a lot of information, but also information which regulates brain development and information which determines cellular survival, differentiation and elimination as well as formation and elimination of nerve contacts (synapses).

Khan Academy Body proportions While there is significant variation in anatomical proportions between people, there are many references to body proportions that are intended to be canonical, either in art, measurement, or medicine. Similarly, in art, body proportions are the study of relation of human or animal body parts to each other and to the whole. These ratios are used in veristic depictions of the figure, and also become part of an aesthetic canon within a culture. Basics of human proportions[edit] Human proportions marked out in an illustration from a 20th century anatomy text-book. Different proportions in different people. It is important in figure drawing to draw the human figure in proportion. The proportions used in figure drawing are:[citation needed] Western ideal[edit] Leg-to-body ratio[edit] Another study using British and American participants, found "mid-ranging" leg-to-body ratios to be most ideal.[8] Muscle men and thin women[edit] Japanese ideal[edit] Leonardo da Vinci[edit] Additional images[edit]

Chemical & Engineering News: What's That Stuff? You might ask yourself... What's That Stuff? Ever wondered about what's really in hair coloring, Silly Putty, Cheese Wiz, artificial snow, or self-tanners? Sort: Alphabetically (Text Only) | Most Recent All Stomach Muscles Anatomy And Abdominal Muscles Exercises

Free video lectures,Free Animations,Free Online Tests,Free e-book download links,Free Lecture Notes 6 Virtual Tours Of The Human Body For Free Interactive Anatomy Lessons When it comes to interactive virtual views, we have gone to space and around the globe. So, it’s not surprising that we are also going within ourselves on a virtual journey of the human body. One of the finest tools available online is Visible Body. If you are disappointed that there aren’t any free interactive anatomy tools, worry not. Google Body You can trust Google to take you everywhere. The Google Body browser is a Google Labs project that renders on Google Chrome and any other browser that supports WebGL (like Firefox 4 Beta). MEDtropolis The interactive website aims to educate entertain both kids and adult on bodily health; understanding the human anatomical structure is just part of the process. For instance, check out the narrated tours on Virtual Body. eSkeletons eSkeletons isn’t only about understanding human anatomy. DirectAnatomy BBC Human Body and Mind The BBC’s webpage is a resource rich place to discover and play interactive games while learning all about the human body.