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... signals rapidly and precisely to other cells. They send these signals in the form of electrochemical waves traveling along thin fibers called axons, which cause chemicals called neurotransmitters to be released at junctions called synapses. A cell that receives a synaptic signal from a neuron may be ...
Session 1 Introduction
Session 1 Introduction

... cerebrospinal fluid. This fluid acts as a shock-absorber. It also keeps the brain clean by flushing out the waste products of brain metabolism. As well as covering the outside of the brain, the cerebrospinal fluid also occupies four spaces within the brain – the ventricles. The two lateral ventricle ...
Introduction and Summary - Cyprus Chiropractic Association
Introduction and Summary - Cyprus Chiropractic Association

... The insular – a tiny area to the back of the orbitofrontal area – is divided into 3 primary areas and ultimately provides us with what we are at any given moment of time. You reading this word is the ultimate function of the insular. The dorso-lateral area (side) is one of the areas of the prefront ...
- Wiley Online Library
- Wiley Online Library

... a particular proposition which refers only to one particular case, whereas the statement ‘consciousnessis a process in the brain’ is a general or universal proposition applying to all states of consciousness whatever. It is fairly clear, I think, that if we lived in a world in which all tables witho ...
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Central Nervous System

... store information and are responsible for giving signals for voluntary movement. ...
Controlling Robots with the Mind
Controlling Robots with the Mind

... research could also help such a patient regain control over a natural arm or leg, with the aid of wireless communication between implants in the brain and the limb. And it could lead to devices that restore or augment other motor, sensory or cognitive functions. The big question is, of course, wheth ...
Brain Abnormalities in Murderers
Brain Abnormalities in Murderers

... implication of poor inter-hemispheric transfer is that the right hemisphere, which is involved in the generation of negative emotions, may experience less regulation and control by the inhibitory processes of the left hemisphere, a factor that may contribute to the expression of violence in predispo ...
Unlocking the Brain`s Deepest Secrets
Unlocking the Brain`s Deepest Secrets

... In neuroscience, neurons get all the glory. Or rather, they used to. Researchers are beginning to discover the importance of something outside the neurons—a structure called the perineuronal net. This net might reveal how memories are stored and how various diseases ravage the brain. The realization ...
The human brain has on average 100 billion neurons, to each
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The Ten-Percent Myth
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... intravenous (IV) perfusion line was used for hydration and injection of the radiotracer. A catheter was inserted in a femoral artery for arterial blood sampling. The head was positioned at the centre of the field of view. PET imaging was performed with the ECAT EXACT HR + PET scanner (Siemens/CT ...
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The CNS Efficiency Model of the Chiropractic Subluxation

... GODA, Y. (1995) Memory mechanisms. A common cascade for long-term memory. Curr. Biol. 5: 136-138 FRIEDRICH, M.J. (2000). Research with Drosophila provides clues to enhancing human memory. JAMA 284: 2857-2858 ...
Antipsychotic Medications and the Brain
Antipsychotic Medications and the Brain

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... Is not direct. Even the indirect effect of CO2 is most potent. Why? Because CO2 easily crosses the BBB. Once it is across the BBB, CO2 + H2O  H2CO3  H+ + HCO3These increased H+ ions in the brain stimulate the medullary chemoreceptors. ...
Nervous System Guide for Potential Doctors
Nervous System Guide for Potential Doctors

... http://www.umm.edu/nervous/disorder.htm intimate interaction with the endocrine system is one of many that explain why the two systems are called the neuroendocrine system. The relationship between sensory and motor neurons can be seen in a reflex (rapid motor response to a stimulus). Reflexes are q ...
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... connections (de Courten-Myers, 1999). [9] Supporting all these neurons are billions more glial cells (glia), cells that surround and link to the neurons, protecting them, providing them with nutrients, and absorbing unused neurotransmitters. The glia come in different forms and have different functi ...
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The three minds of body

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... Schedule II drugs have a high tendency for abuse, may have an accepted medical use, and can produce dependency or addiction with chronic use. This schedule includes examples such as Cocaine, Opium, Morphine, Fentanyl, Amphetamines and Methamphetamines. Schedule II drugs may be available with a presc ...
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... Research has found out that ADHD is not really a disorder of attention, but it is rather a developmental failure in the brain circuitry that underlies inhibition and selfcontrol. Because there is lack of self-control other important brain functions crucial for maintaining attention are affected, inc ...
The Nervous System
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... Reynolds and Weiss (1992) have taken cells from the striatum of mice and treated the cells with epidermal growth factor (EGF). Some of the treated cells divided and formed immature glia and neurons; some of the cells formed new neurons. While this has not been possible to accomplish with an intact b ...
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... performed (in a double-blinded placebo control fashion) to establish the association between diet during midlife and risk of latelife dementia. However, available data from observational studies remain fairly convincing, especially for the Mediterranean diet. For Baby Boomers interested in taking su ...
Click here for Biopsychology information pack
Click here for Biopsychology information pack

... power lines that pass electricity through the suburbs of a city, so too do electrical impulses flow through the body along thousands of tiny neurons. In sensory neurons, the cell body and dendrites are located outside the spinal cord in the torso, arms and legs. The dendrites (also known as dendrons ...
Chapter 7 Appendix
Chapter 7 Appendix

... nervous system is to divide it up into functional systems. Thus, the otfactlry systemconsistsof those parts of the brain that are devoted to the sense of smell, the visual systemincludes those parts that are devoted to vision, a n d s o o n . w h i l e t h i s f u n c t i o n a l a p p r o a c h t o ...
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Blood–brain barrier



The blood–brain barrier (BBB) is a highly selective permeability barrier that separates the circulating blood from the brain extracellular fluid (BECF) in the central nervous system (CNS). The blood–brain barrier is formed by brain endothelial cells, which are connected by tight junctions with an extremely high electrical resistivity of at least 0.1 Ω⋅m. The blood–brain barrier allows the passage of water, some gases, and lipid-soluble molecules by passive diffusion, as well as the selective transport of molecules such as glucose and amino acids that are crucial to neural function. On the other hand, the blood–brain barrier may prevent the entry of lipophilic, potential neurotoxins by way of an active transport mechanism mediated by P-glycoprotein. Astrocytes are necessary to create the blood–brain barrier. A small number of regions in the brain, including the circumventricular organs (CVOs), do not have a blood–brain barrier.The blood–brain barrier occurs along all capillaries and consists of tight junctions around the capillaries that do not exist in normal circulation. Endothelial cells restrict the diffusion of microscopic objects (e.g., bacteria) and large or hydrophilic molecules into the cerebrospinal fluid (CSF), while allowing the diffusion of small hydrophobic molecules (O2, CO2, hormones). Cells of the barrier actively transport metabolic products such as glucose across the barrier with specific proteins. This barrier also includes a thick basement membrane and astrocytic endfeet.
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