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Vocabulary Terms
Vocabulary Terms

... Episode Four: Mystery of Morpheus. Their definitions are contained within the adventure in either the InfoArchives or the Glossary. Teachers should alert the students to the ability to click on the hot-linked words in the game. After the game, teachers may want to review the new vocabulary words. Ax ...
the nervous system - Miss Gleason`s Science
the nervous system - Miss Gleason`s Science

... EMOTIONS: LIMBIC SYSTEM The prefrontal lobe and the hippocampus are part of a system of structures in the brain.  The LIMBIC SYSTEM also includes olfactory lobes. Therefore, memory, emotion, and smell are linked.  Crayolas are created today with the same scent because it reminds people of their h ...
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... communication between parts of nervous system. • Neurons are helped by numerous supporting cells, which provide structural support, protection, and insulation of neurons. ...
The Nervous System
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... Along the axon membrane there are numerous ion channels. Normally these channels are blocked, but if a neuron is sufficiently stimulated the ion channels open and positive ions rush in. The neuron becomes positively charged and an action potential is been generated. ...
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... other parts of the brain that influence our motives.  This includes release of pleasure hormones, rats that could stimulate their HT electrically would do so 7000 times an hour. ...
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... by hypothalamus & secretes many hormones that regulate diverse body functions (growth hormone, prolactin, FSH, LH, TSH, Adrenocorticotropic hormone). Midbrain – sensory integrating and & relay centers to cerebrum Hindbrain:  Pons – breathing control center & relay between PNS and higher brain.  Me ...
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... B. The amino acids glycine and GABA are inhibitory. They produce hyperpolarizations, causing IPSPs, by opening Cl- channels. II. There are a large number of polypeptides that function as neurotransmitters, including the endogenous opioids. III. Nitric oxide functions as both a local tissue regulator ...
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... is constantly making adjustments. It is never at rest! Part I. Nerve Control • _____________________________ – _______________- specialized for the transition of impulses from one part of the body to another. •Neurons _______________ _______________ –Cannot be replaced. If outside the brain and spin ...
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... The division of visual information that began in the retina with the division of ganglion cells into M and P cells continues in the higher level processing centers. The streams have been labeled the “What” stream and the “Where” stream. Parietal or “Where / How” stream The “Where / How” stream begin ...
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... carries impulses towards the cell body • Axon: extension of the cytoplasm that carries nerve impulses away from the cell body • Myelin Sheath: insulated covering over the axon • Axon Terminal: contains synapses, specialized structures where neurotransmitter chemicals are released in order to communi ...
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... locate a cluster of sensory neuron cell bodies. You may also note bundles of nerve fibers passing among groups of neuron cell bodies. Sketch and Label this 2. Sensory Neuron Cell Bodies 7. Obtain a prepared slide of neuroglial cells. Search and locate some darkly stained Astrocytes with numerous lon ...
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... electrical signals within the nervous system. Sensory receptors, together with other cells, compose the major sense organs, including eyes, ears, nose, and taste buds. Information from different sensory receptors go to specific parts of the brain. ...
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... the fornix and adjacent structures, separating the lateral ventricles of the brain and enclosing an area above the third ventricle. It is part of the limbic system and one of the most important of the pleasure centres of the brain, electrical stimulation of this area producing intensely agreeable se ...
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... the sodium channels open, and Na+ diffuse inward, causing depolarization. b) At the same time, potassium channels open, and K+ diffuse outward causing repolarization. repolarization c) This rapid change in potential is called an action potential. d) Many action potentials can occur before an active ...
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doc Behavioural_Neuroscience_Jan_11

... Na+ ions into the cell.  This influx is caused by a transient increase in the permeability of the membrane to NA+ which is then followed by a transient permeability to K +.  This permeability is provided by ion channels that act as pores which open or close. ...
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... Researchers have long believed that changes in brain neurons are associated with the formation of memories. Brain neurons are specialized cells in your body that transfer messages, or impulses, through electrical signals ...
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Guided Notes

... ii. Vesicle fuses with membrane and ruptures releasing ________________________ into synaptic cleft iii. NT (chemical signal) diffuses across cleft and binds to ______________________ iv. Action potential (electrical signal) begins on ______________ neuron (or muscle or gland) v. NT quickly removed ...
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Nervous and Endocrine System

...  Axon Terminals release neurotransmitters into the synapse  Nerve impulses travel from the dendrite through the cell to the axon terminal (one direction only)  Nerve impulses travel through the cell as electrical signals ...
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7-4_DescendingPathways_HubaT

... ascending to and descending from the brain. 3. The spinal cord consists of an external white substance and a gray, butterflyshaped central region made up of nerve cell bodies. Nerve fibers make up pathways in the white matter. Ascending pathways contain sensory fibers that originate in the body, whi ...
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Synaptic gating



Synaptic gating is the ability of neural circuits to gate inputs by either suppressing or facilitating specific synaptic activity. Selective inhibition of certain synapses has been studied thoroughly (see Gate theory of pain), and recent studies have supported the existence of permissively gated synaptic transmission. In general, synaptic gating involves a mechanism of central control over neuronal output. It includes a sort of gatekeeper neuron, which has the ability to influence transmission of information to selected targets independently of the parts of the synapse upon which it exerts its action (see also neuromodulation).Bistable neurons have the ability to oscillate between a hyperpolarized (down state) and a depolarized (up state) resting membrane potential without firing an action potential. These neurons can thus be referred to as up/down neurons. According to one model, this ability is linked to the presence of NMDA and AMPA glutamate receptors. External stimulation of the NMDA receptors is responsible for moving the neuron from the down state to the up state, while the stimulation of AMPA receptors allows the neuron to reach and surpass the threshold potential. Neurons that have this bistable ability have the potential to be gated because outside gatekeeper neurons can modulate the membrane potential of the gated neuron by selectively shifting them from the up state to the down state. Such mechanisms have been observed in the nucleus accumbens, with gatekeepers originating in the cortex, thalamus and basal ganglia.
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