9.01 Exam #1 September 27, 2004 30 multiple
... b) The limit of resolution of the light microscope is 100 nm, whereas the electron microscope has a limit of resolution of 0.1 nm. c) The Golgi stain only stains a small percentage of neurons, and even then not completely; the chances of finding a pair of interconnected neurons is too small to dete ...
... b) The limit of resolution of the light microscope is 100 nm, whereas the electron microscope has a limit of resolution of 0.1 nm. c) The Golgi stain only stains a small percentage of neurons, and even then not completely; the chances of finding a pair of interconnected neurons is too small to dete ...
Nerve Tissue - Coach Frei Science
... 17. ____ Another name for a motor neuron. 18. ____ The fatty substance that fills a Schwann cell and provides protection for the axon. 19. ____ The point of close contact between the telodendrites of one neuron and the dendrites of another neuron. 20. ____ Another name for a sensory neuron. 21. ____ ...
... 17. ____ Another name for a motor neuron. 18. ____ The fatty substance that fills a Schwann cell and provides protection for the axon. 19. ____ The point of close contact between the telodendrites of one neuron and the dendrites of another neuron. 20. ____ Another name for a sensory neuron. 21. ____ ...
Ch. 35 Nervous System edit
... B. Neurons = cells that transmit electrical signals (impulses) 1. 3 types of neurons = sensory, interneurons, motor 2. Parts of neuron a. cell body = contains nucleus and cytoplasm b. dendrites = branched extensions that receive stimuli from the environment or from other neurons, impulse goes toward ...
... B. Neurons = cells that transmit electrical signals (impulses) 1. 3 types of neurons = sensory, interneurons, motor 2. Parts of neuron a. cell body = contains nucleus and cytoplasm b. dendrites = branched extensions that receive stimuli from the environment or from other neurons, impulse goes toward ...
chapter_1
... The neuron activity is an all-or-nothing process, ie., the activation of the neuron is binary. A certain fixed number of synapses (>1) must be excited within a period of latent addition for a neuron to be excited. The only significant delay within the nervous system is synaptic delay. The activity o ...
... The neuron activity is an all-or-nothing process, ie., the activation of the neuron is binary. A certain fixed number of synapses (>1) must be excited within a period of latent addition for a neuron to be excited. The only significant delay within the nervous system is synaptic delay. The activity o ...
three basic functions of the nervous system
... 3. Interneurons – conduct impulses from sensory neurons to motor neurons S.A.M.E. Sensory = Afferent Motor = Efferent ...
... 3. Interneurons – conduct impulses from sensory neurons to motor neurons S.A.M.E. Sensory = Afferent Motor = Efferent ...
Answers to Test Your Knowledge questions for
... A special feature of taste-aversion learning is that learning is possible in spite of the relatively long time (e.g. several hours) that can elapse between the taste of a food and gastrointestinal illness. The functional significance of this is that, under natural conditions, such a long delay migh ...
... A special feature of taste-aversion learning is that learning is possible in spite of the relatively long time (e.g. several hours) that can elapse between the taste of a food and gastrointestinal illness. The functional significance of this is that, under natural conditions, such a long delay migh ...
Nervous System Notes
... • It also tells your body to respond to information. • It also helps maintain HOMEOSTASIS! ...
... • It also tells your body to respond to information. • It also helps maintain HOMEOSTASIS! ...
Glands
... 0 Interneurons: nerve cells in the brain and spinal cord responsible for processing information related to sensory input and motor output. 0 Motor nerves: nerves that carry information to the muscles and glands from the central nervous system. ...
... 0 Interneurons: nerve cells in the brain and spinal cord responsible for processing information related to sensory input and motor output. 0 Motor nerves: nerves that carry information to the muscles and glands from the central nervous system. ...
Nervous System Student Notes
... i. Action potential (electrical signal reaches axon ______________________ 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) ...
... i. Action potential (electrical signal reaches axon ______________________ 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) ...
Nervous Tissue
... • Neurons are electrically excitable due to the voltage difference across their membrane • Communicate with 2 types of electric signals – action potentials that can travel long distances – graded potentials that are local membrane changes only ...
... • Neurons are electrically excitable due to the voltage difference across their membrane • Communicate with 2 types of electric signals – action potentials that can travel long distances – graded potentials that are local membrane changes only ...
Morphological Basis of Learning and Memory: Vertebrates
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Several structural features of synapses have been found to be altered by behavioral experience. One of the most obvious features is the size of synapses. Larger synapses may release more neurotransmitter or have more receptors, such that a size change could indicate a strength change. Early findi ...
Samantha Zarati - A critical review of computational neurological models
... is limiting in terms of plasticity and it is still considerably less efficient than the human brain itself. – This can be improved by both focusing scrutiny on novel methods such as Neurogrid in order to specifically see what should be done to make it more efficient and rethinking the setup to allow ...
... is limiting in terms of plasticity and it is still considerably less efficient than the human brain itself. – This can be improved by both focusing scrutiny on novel methods such as Neurogrid in order to specifically see what should be done to make it more efficient and rethinking the setup to allow ...
29 - IWS2.collin.edu
... area of high concentration to an area of low concentration Ions flow along their electrical gradient when they move toward an area of opposite charge Electrochemical gradient – the electrical and chemical gradients ...
... area of high concentration to an area of low concentration Ions flow along their electrical gradient when they move toward an area of opposite charge Electrochemical gradient – the electrical and chemical gradients ...
The biology of time across different scales
... strength can act as a memory of what happened 100 ms ago. Because the network is in a different state the response to the stimulus will reflect the interval between the tones. A simple model of how short-term synaptic plasticity could allow neurons to respond selectively to specific intervals is sho ...
... strength can act as a memory of what happened 100 ms ago. Because the network is in a different state the response to the stimulus will reflect the interval between the tones. A simple model of how short-term synaptic plasticity could allow neurons to respond selectively to specific intervals is sho ...
Chapter 48 and 49 Name_______________________________
... If two EPSPs are produced in rapid succession, an effect called temporal summation occurs. In spatial summation, EPSPs produced nearly simultaneously by different synapses on the same postsynaptic neuron add together The combination of EPSPs through spatial and temporal summation can trigger an acti ...
... If two EPSPs are produced in rapid succession, an effect called temporal summation occurs. In spatial summation, EPSPs produced nearly simultaneously by different synapses on the same postsynaptic neuron add together The combination of EPSPs through spatial and temporal summation can trigger an acti ...
The Nervous System
... things, the feel good neurotransmitter and helps to regulate body temp. Our brain cells are constantly trying to bring some amount of serotonin back into the cells and out of the synapse using serotonin reuptake transporters. Ecstasy essentially takes these upkeep transporters and reverses their rol ...
... things, the feel good neurotransmitter and helps to regulate body temp. Our brain cells are constantly trying to bring some amount of serotonin back into the cells and out of the synapse using serotonin reuptake transporters. Ecstasy essentially takes these upkeep transporters and reverses their rol ...
Nervous System
... (hyperpolarization - more negative than resting) Na/K pump restores original conditions ...
... (hyperpolarization - more negative than resting) Na/K pump restores original conditions ...
Lesson 3 Brain Communication
... poisoning that affects the nervous system caused by a bacteria. ...
... poisoning that affects the nervous system caused by a bacteria. ...
eating spaghetti!
... chemicals that pour out in the axon terminal of one neuron, cross the synapse, and trigger a nerve impulse in the second neuron. The electrical signal is changing from positive to negative, and it moves the nerve impulse along a neuron. Neurons are in a fiber-like bundle called a nerve, and the impu ...
... chemicals that pour out in the axon terminal of one neuron, cross the synapse, and trigger a nerve impulse in the second neuron. The electrical signal is changing from positive to negative, and it moves the nerve impulse along a neuron. Neurons are in a fiber-like bundle called a nerve, and the impu ...
Answers to End-of-Chapter Questions – Brooker et al ARIS site
... a strong stimulus can produce a greater change. Graded potentials occur along the dendrites and cell body. If a graded potential reaches the threshold potential at the axon hillock, this results in an action potential. This is a change in the membrane potential that is of a constant value, and is pr ...
... a strong stimulus can produce a greater change. Graded potentials occur along the dendrites and cell body. If a graded potential reaches the threshold potential at the axon hillock, this results in an action potential. This is a change in the membrane potential that is of a constant value, and is pr ...
I. Introduction to class
... Potential: A neuron at rest has a net negative charge (-70 mV, equivalent to 5% of the voltage in AA battery). The net negative charge is due to different ion concentrations across the neuron membrane. ...
... Potential: A neuron at rest has a net negative charge (-70 mV, equivalent to 5% of the voltage in AA battery). The net negative charge is due to different ion concentrations across the neuron membrane. ...
Chapter 28: Nervous System
... Potential: A neuron at rest has a net negative charge (-70 mV, equivalent to 5% of the voltage in AA battery). The net negative charge is due to different ion concentrations across the neuron membrane. ...
... Potential: A neuron at rest has a net negative charge (-70 mV, equivalent to 5% of the voltage in AA battery). The net negative charge is due to different ion concentrations across the neuron membrane. ...
Morphological Basis of Learning and Memory: Vertebrates
... the synaptic input (see Figure 1), so the implication was that new synapses formed. Similar findings were subsequently reported in other areas of the cerebral cortex and in brain regions such as hippocampus, superior colliculus, and cerebellum. Of particular importance to learning and memory was tha ...
... the synaptic input (see Figure 1), so the implication was that new synapses formed. Similar findings were subsequently reported in other areas of the cerebral cortex and in brain regions such as hippocampus, superior colliculus, and cerebellum. Of particular importance to learning and memory was tha ...
ntro to Nervous system study guide
... Nervous system Quiz Review 1. What is the function of the nervous system? What other system has this same function? What is the difference between them? ...
... Nervous system Quiz Review 1. What is the function of the nervous system? What other system has this same function? What is the difference between them? ...
NEURONS
... EX- light, gravity, food, etc. *The ability to RESPOND to a stimulus is common to _______ living things !!! ...
... EX- light, gravity, food, etc. *The ability to RESPOND to a stimulus is common to _______ living things !!! ...
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.