Lecture nerve
... B. ligand-gated: open & close in response to particular chemical stimuli (hormone, neurotransmitter, ion) C. mechanically-gated: open with mechanical stimulation ...
... B. ligand-gated: open & close in response to particular chemical stimuli (hormone, neurotransmitter, ion) C. mechanically-gated: open with mechanical stimulation ...
Ch 49 Pract Test Nervous System
... Tolerance means that decreasing amounts of a drug are needed to be effective. d. A lethal dose is a dose that results in death. ...
... Tolerance means that decreasing amounts of a drug are needed to be effective. d. A lethal dose is a dose that results in death. ...
Psychology 210
... Can either excite the receiving neuron or inhibit it Acetylcholine- an excitatory NT typically found in the muscles ________________- an inhibitory NT typically found elsewhere in the nervous system How transmission occurs Multiple synapses on each neuronal dendrite Some can excite while others ____ ...
... Can either excite the receiving neuron or inhibit it Acetylcholine- an excitatory NT typically found in the muscles ________________- an inhibitory NT typically found elsewhere in the nervous system How transmission occurs Multiple synapses on each neuronal dendrite Some can excite while others ____ ...
13. What determines the magnitude of the graded potential? (p. 240)
... are located) and travel down to the axon terminal where they are housed in vesicles until signaled for release. When the appropriate signal (action potential) arrives, neurotransmitter is released via exocytosis. The neurotransmitter then travels by diffusion to the postsynaptic membrane where it op ...
... are located) and travel down to the axon terminal where they are housed in vesicles until signaled for release. When the appropriate signal (action potential) arrives, neurotransmitter is released via exocytosis. The neurotransmitter then travels by diffusion to the postsynaptic membrane where it op ...
00216 - UROP
... Activation of group I metabotropic glutamate (mGlu) receptors causes the endocannabinoid system to induce both short- and long-term changes in synaptic strength in the striatum, the hippocampus, and other regions of the brain. Although current electrophysiological evidence suggests a role for the re ...
... Activation of group I metabotropic glutamate (mGlu) receptors causes the endocannabinoid system to induce both short- and long-term changes in synaptic strength in the striatum, the hippocampus, and other regions of the brain. Although current electrophysiological evidence suggests a role for the re ...
Jürgen R. Schwarz
... Information processing within the brain involves the generation of action potentials which are responsible for fast communication between nerve cells. Action potentials have a short duration and are generated by a transient influx of Na+ and a delayed outflow of K+ through voltage-gated ion channels ...
... Information processing within the brain involves the generation of action potentials which are responsible for fast communication between nerve cells. Action potentials have a short duration and are generated by a transient influx of Na+ and a delayed outflow of K+ through voltage-gated ion channels ...
Chapter 27
... channels which allow Na+ ions to pass through while others permit the movement of K+ ions. In the resting state, these channels are closed, but become depolarized and open when stimulated. The gates of the sodium channel open more quickly than those of the potassium channel. This explains why sodium ...
... channels which allow Na+ ions to pass through while others permit the movement of K+ ions. In the resting state, these channels are closed, but become depolarized and open when stimulated. The gates of the sodium channel open more quickly than those of the potassium channel. This explains why sodium ...
Nerve Tissue Notes
... WARM UP “The secret of action is to begin.” 1. What does this mean to you? 2. How can you apply this to Biology II? ...
... WARM UP “The secret of action is to begin.” 1. What does this mean to you? 2. How can you apply this to Biology II? ...
Synapses
... Two neurons releasing neurotransmitters that act on a third neuron. The first two neurons could be in the Central Nervous System, and the third might be a motor neuron leading out to a muscle or gland. Schwann Cells form a myelin sheath Around the axon of motor neurons Neurons ...
... Two neurons releasing neurotransmitters that act on a third neuron. The first two neurons could be in the Central Nervous System, and the third might be a motor neuron leading out to a muscle or gland. Schwann Cells form a myelin sheath Around the axon of motor neurons Neurons ...
notes as
... and bind to receptor molecules in the membrane of the postsynaptic neuron thus changing their shape. – This opens up holes that allow specific ions in or out. • The effectiveness of the synapse can be changed – vary the number of vesicles of transmitter – vary the number of receptor molecules. • Syn ...
... and bind to receptor molecules in the membrane of the postsynaptic neuron thus changing their shape. – This opens up holes that allow specific ions in or out. • The effectiveness of the synapse can be changed – vary the number of vesicles of transmitter – vary the number of receptor molecules. • Syn ...
Your Nervous System
... When the cell membrane becomes depolarized, K+ automatically leaves the cell until the cell is back to its resting state. ...
... When the cell membrane becomes depolarized, K+ automatically leaves the cell until the cell is back to its resting state. ...
File
... -- remember, they are still a part of the neuron, thus they possess a cell membrane known as the axomembrane. -- an axon’s cytoplasm is specifically referred to as the axoplasm. -- usually, axons are bundled together into NERVES (like wire in cables). - axons that occur in nerves are also referred t ...
... -- remember, they are still a part of the neuron, thus they possess a cell membrane known as the axomembrane. -- an axon’s cytoplasm is specifically referred to as the axoplasm. -- usually, axons are bundled together into NERVES (like wire in cables). - axons that occur in nerves are also referred t ...
22 reflexes 1 - The reflex arc
... The efferent axon also carries all-or-none action potentials The neuromuscular junction the response there is also the need for summation, but the excitatory post-synaptic potential is almost always large enough to produce a contraction ...
... The efferent axon also carries all-or-none action potentials The neuromuscular junction the response there is also the need for summation, but the excitatory post-synaptic potential is almost always large enough to produce a contraction ...
Neuron PowerPoint
... branch of psychology that studies how the body influences behavior and mental processes some biological psychologists call themselves behavioral neuroscientists, neuropsychologists, behavior geneticists, physiological psychologists, or biopsychologists ...
... branch of psychology that studies how the body influences behavior and mental processes some biological psychologists call themselves behavioral neuroscientists, neuropsychologists, behavior geneticists, physiological psychologists, or biopsychologists ...
3-1-neuron _1
... branch of psychology that studies how the body influences behavior and mental processes some biological psychologists call themselves behavioral neuroscientists, neuropsychologists, behavior geneticists, physiological psychologists, or biopsychologists ...
... branch of psychology that studies how the body influences behavior and mental processes some biological psychologists call themselves behavioral neuroscientists, neuropsychologists, behavior geneticists, physiological psychologists, or biopsychologists ...
Neuron PowerPoint
... branch of psychology that studies how the body influences behavior and mental processes some biological psychologists call themselves behavioral neuroscientists, neuropsychologists, behavior geneticists, physiological psychologists, or biopsychologists ...
... branch of psychology that studies how the body influences behavior and mental processes some biological psychologists call themselves behavioral neuroscientists, neuropsychologists, behavior geneticists, physiological psychologists, or biopsychologists ...
The Biological Bases of Behavior
... – Not all-or-none – Changes the probability of the postsynaptic neuron firing • Positive voltage shift – excitatory PSP • Negative voltage shift – inhibitory PSP ...
... – Not all-or-none – Changes the probability of the postsynaptic neuron firing • Positive voltage shift – excitatory PSP • Negative voltage shift – inhibitory PSP ...
Neuron Functioning
... • When a neuron has “fired” a signal, it takes time to reset and get ready to go again. This is called the refractory period. ...
... • When a neuron has “fired” a signal, it takes time to reset and get ready to go again. This is called the refractory period. ...
Chapter 2
... Depolarization: sodium gates open; let sodium (+) in Repolarization: sodium gates close, potassium gates open and let potassium (+) out; potassium gates close when charge is leveled (back to -) Refractory period: time period in which the neuron ...
... Depolarization: sodium gates open; let sodium (+) in Repolarization: sodium gates close, potassium gates open and let potassium (+) out; potassium gates close when charge is leveled (back to -) Refractory period: time period in which the neuron ...
conductance versus current-based integrate-and - Neuro
... limit that the correlations in the induced conductances are short - the model neglects correlations that are known to be important at higher frequencies [4]. Nevertheless, it does allow for a fair comparison with the current-based IF neuron, and most importantly, it captures the principal features o ...
... limit that the correlations in the induced conductances are short - the model neglects correlations that are known to be important at higher frequencies [4]. Nevertheless, it does allow for a fair comparison with the current-based IF neuron, and most importantly, it captures the principal features o ...
Neurotransmitters
... other neurons. The greater the surface area, the greater the amount of information. Some ...
... other neurons. The greater the surface area, the greater the amount of information. Some ...
BioH Nervous System PPT 2013
... cell body Cell Body – the largest part of a neuron, containing most of the cytoplasm and the nucleus Axon – the long extension that carries an impulse away from the cell body Myelin (myelin sheath) – insulating membrane surrounding most axons (roduced by Schwann cells) separated by small gaps (Nodes ...
... cell body Cell Body – the largest part of a neuron, containing most of the cytoplasm and the nucleus Axon – the long extension that carries an impulse away from the cell body Myelin (myelin sheath) – insulating membrane surrounding most axons (roduced by Schwann cells) separated by small gaps (Nodes ...
Nonsynaptic plasticity
Nonsynaptic plasticity is a form of neuroplasticity that involves modification of ion channel function in the axon, dendrites, and cell body that results in specific changes in the integration of excitatory postsynaptic potentials (EPSPs) and inhibitory postsynaptic potentials (IPSPs). Nonsynaptic plasticity is a modification of the intrinsic excitability of the neuron. It interacts with synaptic plasticity, but it is considered a separate entity from synaptic plasticity. Intrinsic modification of the electrical properties of neurons plays a role in many aspects of plasticity from homeostatic plasticity to learning and memory itself. Nonsynaptic plasticity affects synaptic integration, subthreshold propagation, spike generation, and other fundamental mechanisms of neurons at the cellular level. These individual neuronal alterations can result in changes in higher brain function, especially learning and memory. However, as an emerging field in neuroscience, much of the knowledge about nonsynaptic plasticity is uncertain and still requires further investigation to better define its role in brain function and behavior.