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Brain Stem - Maryville University
Brain Stem - Maryville University

... Has sensory and motor roots. • Vestibulocochlear nerve: more laterally to the facial N • Glossopharngeal and vagus: between olive and the tuberculum cinereum • hypoglossal nerve: between pyramid and the ...
Chapt13 Lecture 13ed Pt 1
Chapt13 Lecture 13ed Pt 1

... The myelin sheath • A lipid covering on long axons that acts to increase the speed of nerve impulse conduction, insulation, and regeneration in the PNS • _____________ – neuroglia that make up the myelin sheath in the PNS • _____________ – gaps between myelination on the axons • Saltatory conduction ...
Chapter 2
Chapter 2

...  Children who are CC or CG and were breastfed as infants had higher IQ than children with the same alleles but were not breastfed.  Children with a third version of the genes (GG) showed no effect on from being breastfed or bottlefed.  The benefits of breastfeeding for IQ are influenced by combin ...
Hypothesis /Prediction
Hypothesis /Prediction

... 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, including the ability to yield instantaneous rewards for later, better gain. Imaging ...
Modern neuroscience is based on ideas derived
Modern neuroscience is based on ideas derived

... methods, and offered exciting new possibilities. No other technique has comparable power and flexibility to show at once the spectrum of inputs and outputs of small or large brain areas, a column, layer, or single neurons. Using tracers we learned, for example, that connections between any two struc ...
Human Anatomy & Physiology I
Human Anatomy & Physiology I

... Control of ANS-regulation of many activities Control of pituitary and hormone production Regulation of emotional & behavior patterns Regulation of eating & drinking Control of body temperature Regulation of circadian rhythms & states of ...
Psychology, 4/e by Saul Kassin Behavioral Neuroscience The
Psychology, 4/e by Saul Kassin Behavioral Neuroscience The

...  Both eyes send information to both hemispheres.  Images in the right half of the visual field go to the left hemisphere.  Images in the left half of the visual field go to the right hemisphere. ...
ppt - Castle High School
ppt - Castle High School

... Axon diameter and myelination by glial cells increase the speed of action potentials in axons. The nodes of Ranvier are regularly spaced gaps where the axon is not covered by myelin. Action potentials are generated at the nodes and the positive current flows down the inside of the axon. ...
LESSON ASSIGNMENT LESSON 5 The Central Nervous
LESSON ASSIGNMENT LESSON 5 The Central Nervous

... Figure 5-2. A synapse. (1) First neuron. An axon terminates in tiny branches. At the end of each branch is found a terminal knob. Synaptic vesicles (bundles of neurotransmitters) are located within each terminal knob. That portion of the terminal knob that faces the synaptic cleft is thickened and ...
Biological Psychology
Biological Psychology

... Make a midsagittal cut by placing your forefinger and middle finger (of your non-dominant hand) on the left and right hemispheres respectively. Pick up the scalpel with the other hand and position it at the longitudinal fissure toward the posterior end of the brain with the sharp end of the blade aw ...
references - Academic Science,International Journal of Computer
references - Academic Science,International Journal of Computer

... wave system is shown in Figure 1. The hardware of this system consists mainly of two major parts: a wireless physiological signal acquisition module and an embedded signal processing module. So, in our proposed project work we are analyzing the mental activities of brain using EEG signals based on B ...
Biological Psychology
Biological Psychology

... The relationship between the 3rd ventricle and the thalamus is somewhat unusual. Most of the medial portions of the two thalami are fused in a structure called the massa intermedia. Where this fusion exists, of course, there can be no ventricular space. Consequently, the 3rd ventricle must run aroun ...
The Body Systems Song Tune: Ants Go Marching The Respiratory
The Body Systems Song Tune: Ants Go Marching The Respiratory

... I need my muscles, I need my muscles, I need my muscles to make me strong, And my muscles are part of my Muscular System. ...
feature analyzers in the brain
feature analyzers in the brain

...  receptive field of a neuron  source of stimulus and/or representation on sensory surface (e.g. basilar membrane or retina)  center/surround; excite/inhibit  auditory difficult, achieved by neural processing  essential aspect of receptive fields  contrast ...
Brainstem 10
Brainstem 10

... • Identify the gross features of the brainstem. • Briefly describe the internal structure of the brainstems (ascending and descending pathways, sensory and motor cranial nuclei, substantia nigra, red nucleus, olivary nucleus and reticular formation). • Describe the main connections of the sensory cr ...
Test bank module 3 4 5 6 11 12
Test bank module 3 4 5 6 11 12

... 14. A slap on the back is more painful than a pat on the back because a slap triggers: A) the release of endorphins. B) more intense neural impulses. C) the release of GABA. D) more frequent neural impulses. 15. Sir Charles Sherrington observed that impulses took more time to travel a neural pathwa ...
AG-VT - 02.424 06.1 Skeleton and Vital Organs
AG-VT - 02.424 06.1 Skeleton and Vital Organs

... to and from the brain and nervous system. There are about 100 billion neurons in the brain. There are many more glial cells; they provide support functions for the neurons, and are far more numerous than neurons. There are many type of neurons. They vary in size from 4 microns (.004 mm) to 100 micro ...
Parkinson`s Disease Glossary A guide to the scientific language of
Parkinson`s Disease Glossary A guide to the scientific language of

... ATP13A2 (PARK 9): A gene that codes for a form of the ATPase enzyme. When mutated, this gene may cause a form of early onset Parkinson’s. Autonomic Nervous System (ANS): Part of the peripheral nervous system, consisting of sympathetic and parasympathetic nerves that control involuntary actions, in ...
The Nervous System * Crash Course Biology
The Nervous System * Crash Course Biology

... next batch of Na+ (sodium) channels that then open and trigger the next batch to do the same. Since most of the neuron is covered by the ___________________ sheath this event only happens at the ________________ which produces the salutatory conduction as the change in voltage event leaps down the a ...
The Newborn`s Reflexes
The Newborn`s Reflexes

... • Because growth is so rapid, young babies must consume large amounts of calories relative to body weight • Breast-feeding is the best way to ensure proper nourishment • Foods should be introduced one at a time ...
IN CONTROL: NERVOUS SYSTEM OUR BRAIN AND
IN CONTROL: NERVOUS SYSTEM OUR BRAIN AND

... phone call or buy the items on a short shopping list. Also, most people can remember only a very limited number of things. Students can test their own short-term memory. Make a number of different "shopping lists" of common objects. The shortest list might have only 4 or 5 things. The longest list m ...
Electrophysiology applications 1
Electrophysiology applications 1

... natural and more complex milieu of the brain. The properties of neurons observed vary widely with minor changes in the slice environment, so that results may be heavily biased by the particular experimental conditions employed in an individual lab (for example, depending upon whether interface or su ...
Nervous Tissue
Nervous Tissue

... A neuron consists of a cell body where the nucleus, mitochondria, and other cell structures can be found. At one end of the neuron are the dendrites, multiples tree-like structures that acts as the receiving portion of the neuron. The other end is the axon, where the nerve impulse travels through to ...
Fetal Awareness
Fetal Awareness

... in their initial form. This represents the start of the fetal period which lasts until birth during which time the fetus' length increases tenfold (from 30mm to 300mm), its weight one thousand-fold (from 3g to 3500 g) and its proportions change to those of the full-term baby. At around 17 days, the ...
Visual Information and Eye Movement Control in Human Cerebral
Visual Information and Eye Movement Control in Human Cerebral

... can perform these calculations without difficulty in less than one second, as these calculations are performed by a massively parallel calculation mechanism that far exceeds our current technology and knowledge, and also because our mechanisms allow us to perform the programming required for such ca ...
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Brain



The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. Only a few invertebrates such as sponges, jellyfish, adult sea squirts and starfish do not have a brain; diffuse or localised nerve nets are present instead. The brain is located in the head, usually close to the primary sensory organs for such senses as vision, hearing, balance, taste, and smell. The brain is the most complex organ in a vertebrate's body. In a typical human, the cerebral cortex (the largest part) is estimated to contain 15–33 billion neurons, each connected by synapses to several thousand other neurons. These neurons communicate with one another by means of long protoplasmic fibers called axons, which carry trains of signal pulses called action potentials to distant parts of the brain or body targeting specific recipient cells.Physiologically, the function of the brain is to exert centralized control over the other organs of the body. The brain acts on the rest of the body both by generating patterns of muscle activity and by driving the secretion of chemicals called hormones. This centralized control allows rapid and coordinated responses to changes in the environment. Some basic types of responsiveness such as reflexes can be mediated by the spinal cord or peripheral ganglia, but sophisticated purposeful control of behavior based on complex sensory input requires the information integrating capabilities of a centralized brain.The operations of individual brain cells are now understood in considerable detail but the way they cooperate in ensembles of millions is yet to be solved. Recent models in modern neuroscience treat the brain as a biological computer, very different in mechanism from an electronic computer, but similar in the sense that it acquires information from the surrounding world, stores it, and processes it in a variety of ways, analogous to the central processing unit (CPU) in a computer.This article compares the properties of brains across the entire range of animal species, with the greatest attention to vertebrates. It deals with the human brain insofar as it shares the properties of other brains. The ways in which the human brain differs from other brains are covered in the human brain article. Several topics that might be covered here are instead covered there because much more can be said about them in a human context. The most important is brain disease and the effects of brain damage, covered in the human brain article because the most common diseases of the human brain either do not show up in other species, or else manifest themselves in different ways.
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