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week4am
week4am

... ◦ the portion of the axon that is conveying information to the next neuron synapse or synaptic cleft ◦ the space between neurons where communication occurs postsynaptic membrane ◦ the portion of the neuron (usually dendrite) that receives information ...
E4 - Neurotransmitters and Synapses - IBDPBiology-Dnl
E4 - Neurotransmitters and Synapses - IBDPBiology-Dnl

... from the interaction between the activities of excitatory and inhibitory presynaptic neurons at synapses. E.4.3 Explain how psychoactive drugs affect the brain and personality by either increasing or decreasing postsynaptic transmission. E.4.4 List three examples of excitatory and three examples of ...
nervous tissue organization neurons neuroglia action potentials
nervous tissue organization neurons neuroglia action potentials

... neurotransmitters acetylcholine amino acids = glycine↓, glutamate↑, aspartate↑, GABA↓ monoamines = epinepherine, norepinepherine, dopa, catecholamines histamines, serotonin, ATP neuropeptides = cholecystokinin, sub P, enkephalins, endorphins neuromodulating hormones = long term effectors = NO, dop ...
Nervous System Poster
Nervous System Poster

... 3. Schwann cells, which form the myelin sheath, are separated by gaps of unsheathed axon (nodes of Ranvier) over which the impulse travels as the signal propagates along the neuron. B. Action potentials propagate impulses along neurons. 1. Membranes of neurons are polarized by the establishment of e ...
The action potential and the synapses
The action potential and the synapses

... The elimination of the neurotransmitter from the inter-synaptic space The correct operation of a chemical synapses, is based on the constant relationship between incoming action potentials and amount of neurotransmitter released in the synaptic cleft. This presupposes the existence of disposal mech ...
Nervous system
Nervous system

... auditory signals, processing language and the meaning of ...
Ch 3 Review
Ch 3 Review

...  Neuropeptides – brain chemicals that regulate the activity of neurons  Enkephalins – opiate-like brain chemicals that regulate reactions to pain and stress  Endorphins – chemicals that are similar in structure and pain-killing effect to opiate drugs such as morphine; released by the pituitary gl ...
chapt12 neuron_lecture
chapt12 neuron_lecture

... Na+ channels open (Na+ enters causing depolarization) • Passes 0 mV & Na+ channels close (peaks at +35) • K+ gates fully open, K+ exits – no longer opposed by ...
Document
Document

... Actions/Effects: LSD alters the action of the neurotransmitters serotonin, norepinephrine, and dopamine, triggering extreme changes in brain function. Physical effects include increased body temperature, heart rate, and blood pressure. Psychological effects include perceptual and thought distortions ...
Ch_09_Nervous_System_A_
Ch_09_Nervous_System_A_

... Actions/Effects: LSD alters the action of the neurotransmitters serotonin, norepinephrine, and dopamine, triggering extreme changes in brain function. Physical effects include increased body temperature, heart rate, and blood pressure. Psychological effects include perceptual and thought distortions ...
Neurotransmitters
Neurotransmitters

... and too little is associated with some forms of depression as well as the muscular rigidity and tremors found in Parkinson’s disease. Most abused drugs cause the release of dopamine and this is thought to contribute to their addictive properties. Cocaine and various forms of meth are notorious for e ...
Neuron PowerPoint
Neuron PowerPoint

...  Myelinated axons speed neuronal transmission by about 15 times.  Most neurons are myelinated, however, not all. ...
document
document

... Postsynaptic potentials are produced by the flow of ions in and out of the cell. Each NT produces a specific postsynaptic potential ...
Motor neuron
Motor neuron

... Prozac/Zoloft raises serotonin levels. ...
Neurons – A whistle-stop Tour
Neurons – A whistle-stop Tour

... nearly, but not actually touch the next neuron. Axon terminals contain many synaptic vesicules loaded with 2000 molecules of a specialised compound called a neurotransmitter. An electrical impulse called a ‘spike’ sends electrical impulses down the axon. Waiting for the ‘spike’ from the neurotransmi ...
Axon - eCurriculum
Axon - eCurriculum

... One of the most common inherited neurological disorders ...
Biology/ANNB 261 Exam 2
Biology/ANNB 261 Exam 2

... invertebrate, but modulates (either excites – calcium activated Cl- channel, or inhibits – e.g., calmodulin pathway) olfactory receptor neurons in mammals. 39. enteric division (pp 495-496): division of the autonomic nervous system embedded in the lining of several gastrointestinal organs. Sensory n ...
Ions in Your Life
Ions in Your Life

... down the axon (Ca+) triggers the release of synaptic vesicles filled with neurotransmitters into synaptic gap/cleft. Neurotransmitters bind with specific channels on next neuron to start electrical impulse (flow of ions) down next neuron’s axon. Many neurotransmitters each that bind to different sit ...
Neuron Structure and Function
Neuron Structure and Function

... transferred across the synapse by a chemical: neurotransmitter.  The neurotransmitter is released from vesicles in the axon.  The neurotransmitter is released when the action potential reaches the axon terminal. ...
Neuroscience and Behavior
Neuroscience and Behavior

... Okay, 25 years ago when I was 20 (you can do the math), I was quickly losing my eyesight and had developed problems with peripheral vision. I went to my optometrist and he referred me to an ophthalmologist who tested my visual field acuity and found there was a severe problem on both sides of my per ...
The Nervous System - Needham.K12.ma.us
The Nervous System - Needham.K12.ma.us

... d.edu/animations/actionpot ential.swf ...
file - Athens Academy
file - Athens Academy

... responsible for ridding the brain of debris and foreign substances – it acts as an immune system for the nervous system. ...
Synaptic transmission
Synaptic transmission

... Central nervous system synapses • Though there are two types( chemical and electrical), but, since almost all the synapses un CNS are chemical synapses, so these are discussed in detail. • In these, the first neuron secretes at its nerve ending synapse a chemical substance called a neurotransmitter ...
7. Describe what membrane potential is, and how
7. Describe what membrane potential is, and how

... • Synaptic terminals  the specialized endings of axons that release neurotransmitters into the synapse (site of contact between that and the receiving cell)  ...
Nerve Cell Signaling - Mr. Moore`s Web Page
Nerve Cell Signaling - Mr. Moore`s Web Page

... • 4.4 Explain how the nervous system (brain, spinal cord, sensory neurons, motor neurons) mediates communication among different parts of the body and mediates the body’s interactions with the environment. ...
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Neurotransmitter

Neurotransmitters are endogenous chemicals that enable neurotransmission. They transmit signals across a chemical synapse, such as in a neuromuscular junction, from one neuron (nerve cell) to another ""target"" neuron, muscle cell, or gland cell. Neurotransmitters are released from synaptic vesicles in synapses into the synaptic cleft, where they are received by receptors on other synapses. Many neurotransmitters are synthesized from simple and plentiful precursors such as amino acids, which are readily available from the diet and only require a small number of biosynthetic steps to convert them. Neurotransmitters play a major role in shaping everyday life and functions. Their exact numbers are unknown but more than 100 chemical messengers have been identified.
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