Ch 8 Nervous System Test 1. In a neuron, short, branching
... a. may branch to form collateral axons. b. have an axon hillock which is devoid of nissl bodies. c. are often surrounded by a myelin sheath. d. carry action potentials away from the cell body. e. have all of these characteristics. 3. Which of these is NOT a type of neuroglia cell? a. astrocyte b. mi ...
... a. may branch to form collateral axons. b. have an axon hillock which is devoid of nissl bodies. c. are often surrounded by a myelin sheath. d. carry action potentials away from the cell body. e. have all of these characteristics. 3. Which of these is NOT a type of neuroglia cell? a. astrocyte b. mi ...
Chapter 48 PowerPoint 2016 - Spring
... Production of Action Potentials • Voltage-gated Na+ and K+ channels respond to a change in membrane potential • When a stimulus depolarizes the membrane, Na+ channels open, allowing Na+ to diffuse into the cell • The movement of Na+ into the cell increases the depolarization and causes even more Na ...
... Production of Action Potentials • Voltage-gated Na+ and K+ channels respond to a change in membrane potential • When a stimulus depolarizes the membrane, Na+ channels open, allowing Na+ to diffuse into the cell • The movement of Na+ into the cell increases the depolarization and causes even more Na ...
pttx
... To Remember When an AP depolarizes the membrane at the synaptic terminal it 2) opens voltage-gated Ca++ channels, 3) the Ca++ that gets in causes vesicles full of neuro-transmitter to empty (4). The neurotransmitter binds to ligand-gated ion channels. The result is a post-synaptic potential (PSP). ...
... To Remember When an AP depolarizes the membrane at the synaptic terminal it 2) opens voltage-gated Ca++ channels, 3) the Ca++ that gets in causes vesicles full of neuro-transmitter to empty (4). The neurotransmitter binds to ligand-gated ion channels. The result is a post-synaptic potential (PSP). ...
Document
... Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. path of action potential 1. After an action potential arrives at an axon terminal, Ca2+ enters, and synaptic vesicles fuse with the presynaptic membrane. ...
... Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. path of action potential 1. After an action potential arrives at an axon terminal, Ca2+ enters, and synaptic vesicles fuse with the presynaptic membrane. ...
Module overview
... Receptive field of a neuron • subset of the sensory space in which an appropriate stimulus elicits a reaction in the neuron • More generally the properties of a stimulus that gives a response in a neuron – the frequency of a sound – the properties of a face – chemical content on tongue ...
... Receptive field of a neuron • subset of the sensory space in which an appropriate stimulus elicits a reaction in the neuron • More generally the properties of a stimulus that gives a response in a neuron – the frequency of a sound – the properties of a face – chemical content on tongue ...
EXPLORING PSYCHOLOGY (7th Edition in Modules) David Myers
... • Action Potentials are based on movements of ions between the outside and inside of the cell • When an Action Potential occurs a molecular message is sent to neighboring neurons ...
... • Action Potentials are based on movements of ions between the outside and inside of the cell • When an Action Potential occurs a molecular message is sent to neighboring neurons ...
nervous system divisions cns, pns 1
... Monitors changes/events occurring in and outside the body. Such changes are known as stimuli and the cells that monitor them are receptors. ...
... Monitors changes/events occurring in and outside the body. Such changes are known as stimuli and the cells that monitor them are receptors. ...
1. Which of the following is the component of the limbic system that
... D) was activated by her self-regulating autonomic nervous system. E) was controlled by both her nervous system and impulses from her endocrine system. 33. A picture of a cat is briefly flashed in the left visual field and a picture of a mouse is briefly flashed in the right visual field of a split-b ...
... D) was activated by her self-regulating autonomic nervous system. E) was controlled by both her nervous system and impulses from her endocrine system. 33. A picture of a cat is briefly flashed in the left visual field and a picture of a mouse is briefly flashed in the right visual field of a split-b ...
Monday, June 20, 2005
... synaptic cleft. Here, I will concentrate on recent work in which we have used synaptically-evoked Ca2+ transients in dendritic spines to carry out optical quantal analysis of transmission at individual synapses before and after the induction of long-term synaptic plasticity. We find that individual ...
... synaptic cleft. Here, I will concentrate on recent work in which we have used synaptically-evoked Ca2+ transients in dendritic spines to carry out optical quantal analysis of transmission at individual synapses before and after the induction of long-term synaptic plasticity. We find that individual ...
Test.
... • Also some neurons respond to specific stimuli – e.g. to faces but not to dogs. • There might even be a Clinton cell… ...
... • Also some neurons respond to specific stimuli – e.g. to faces but not to dogs. • There might even be a Clinton cell… ...
Chapter 11 Outline - CM
... Cytoskeleton – contains microtubules; provide structural support and a means for chemical transportation between cell body and axon Neurofibrils – composed of intermediate filaments of cytoskeleton; provide structural support that extends into neuron processes Processes – cytoplasmic extensions ...
... Cytoskeleton – contains microtubules; provide structural support and a means for chemical transportation between cell body and axon Neurofibrils – composed of intermediate filaments of cytoskeleton; provide structural support that extends into neuron processes Processes – cytoplasmic extensions ...
Neurotransmitters
... serotonin receptors, serotonin levels and enzymes used in it synthesis. • Mainly affects Raphe Nucleus in Pons • The raphe axons and neurons die ...
... serotonin receptors, serotonin levels and enzymes used in it synthesis. • Mainly affects Raphe Nucleus in Pons • The raphe axons and neurons die ...
PD233-Lecture6
... Potential difference leads to flow of current flow when two points with different electric potential are connected with conducting media. ...
... Potential difference leads to flow of current flow when two points with different electric potential are connected with conducting media. ...
Presentation Package - faculty.coe.unt.edu
... communicates with a muscle fiber. • Axon terminal releases neurotransmitters (such as acetylcholine or epinephrine), which travel across a synaptic cleft and bind to receptors on a muscle fiber. • This binding causes depolarization, possibly causing an action potential. • The action potential spread ...
... communicates with a muscle fiber. • Axon terminal releases neurotransmitters (such as acetylcholine or epinephrine), which travel across a synaptic cleft and bind to receptors on a muscle fiber. • This binding causes depolarization, possibly causing an action potential. • The action potential spread ...
Brain Plasticity
... In one of them, a surgeon in his 50s suffers a stroke. His left arm is paralyzed. During his rehabilitation, his good arm and hand are immobilized, and he is set to cleaning tables. The task is at first impossible. Then slowly the bad arm remembers how to move. He learns to write again, to play tenn ...
... In one of them, a surgeon in his 50s suffers a stroke. His left arm is paralyzed. During his rehabilitation, his good arm and hand are immobilized, and he is set to cleaning tables. The task is at first impossible. Then slowly the bad arm remembers how to move. He learns to write again, to play tenn ...
Release of neurotransmitters from glia
... through voltage-gated calcium channels to activate receptors that depolarize or hyperpolarize the postsynaptic membrane of adjacent neurons. (An exception is recognized to include communication between motor neurons and muscle cells.) The discovery of ‘neurotransmitter’ release from glia raises the ...
... through voltage-gated calcium channels to activate receptors that depolarize or hyperpolarize the postsynaptic membrane of adjacent neurons. (An exception is recognized to include communication between motor neurons and muscle cells.) The discovery of ‘neurotransmitter’ release from glia raises the ...
Nervous Nellie Circuit Lesson Summary: Neurons, or nerve cells
... fixed rate. This models pacemaker activity in the central nervous system. In the central nervous system, the rate of spontaneous firing of a pacemaker neuron can be modulated up and down by synaptic input. This program is not sophisticated enough to do that. Change Neuron Thresholds To activate this ...
... fixed rate. This models pacemaker activity in the central nervous system. In the central nervous system, the rate of spontaneous firing of a pacemaker neuron can be modulated up and down by synaptic input. This program is not sophisticated enough to do that. Change Neuron Thresholds To activate this ...
Worksheet - Nervous System I Lecture Notes Page
... must open then close in sequence along the entire length of the cell membrane. This results in a relative ________________ (slower/faster) rate of conduction. In contract, myelinated neurons are capable of ___________________________(continuous/saltatory) conduction. In this type of conduction only ...
... must open then close in sequence along the entire length of the cell membrane. This results in a relative ________________ (slower/faster) rate of conduction. In contract, myelinated neurons are capable of ___________________________(continuous/saltatory) conduction. In this type of conduction only ...
Nervous Tissue
... Receptors monitor both external and internal environments. Integration: Process the information (at synapses) and often integrate it with stored information. Motor output: If necessary, signal effector organs to make an appropriate response. ...
... Receptors monitor both external and internal environments. Integration: Process the information (at synapses) and often integrate it with stored information. Motor output: If necessary, signal effector organs to make an appropriate response. ...
Nervous system Lab - Sonoma Valley High School
... A) List two striking characteristics of neurons. B) Characterize a nerve impulse. C) Explain how ions play a role in creating an impulse. D) Explain how ion channels play a role in nerve impulses. E) Characterize a neuron that is resting regarding charges, ion concentrations. F) Explain the role of ...
... A) List two striking characteristics of neurons. B) Characterize a nerve impulse. C) Explain how ions play a role in creating an impulse. D) Explain how ion channels play a role in nerve impulses. E) Characterize a neuron that is resting regarding charges, ion concentrations. F) Explain the role of ...
PDF - Cogprints
... According to our model, both CF (climbing fiber) and MF (mossy fiber) should be the teacher signals (4) other than error signals (5). From the logic viewpoint, neurons in the inward trees are like “AND” gates, while neurons in the outward trees are “OR” gates. The logic functions are mainly determin ...
... According to our model, both CF (climbing fiber) and MF (mossy fiber) should be the teacher signals (4) other than error signals (5). From the logic viewpoint, neurons in the inward trees are like “AND” gates, while neurons in the outward trees are “OR” gates. The logic functions are mainly determin ...
Neuroscience: The Biological Bases of Behavior
... happens when a neuron is stimulated? Both inside and outside the neuron are fluids containing electrically charged atoms and molecules called ions. Positively charged sodium (Na) and potassium (K) ions and negatively charged chloride ions flow back forth across the cell membrane. The differenc ...
... happens when a neuron is stimulated? Both inside and outside the neuron are fluids containing electrically charged atoms and molecules called ions. Positively charged sodium (Na) and potassium (K) ions and negatively charged chloride ions flow back forth across the cell membrane. The differenc ...
A Learning Rule for the Emergence of Stable Dynamics and Timing
... 0.25; rec ⫽ 700 ms; fac ⫽ 25 ms (Gupta et al. 2000). The presence of short-term plasticity was not essential to the behavior of the networks described below. Initial synaptic strengths were chosen from a normal distribution. For the Ex 3 Ex, Ex 3 Inh, and Inh 3 Ex synapses, the mean initial synapt ...
... 0.25; rec ⫽ 700 ms; fac ⫽ 25 ms (Gupta et al. 2000). The presence of short-term plasticity was not essential to the behavior of the networks described below. Initial synaptic strengths were chosen from a normal distribution. For the Ex 3 Ex, Ex 3 Inh, and Inh 3 Ex synapses, the mean initial synapt ...
PsychSim 5: PSYCHOLOGY`S TIMELINE
... This activity describes what researchers have learned about the special abilities of the left and right sides of the brain. You will learn how information is transmitted to these two hemispheres and about the unique function of each. Hemispheric Connections What is the name of the band of fibers c ...
... This activity describes what researchers have learned about the special abilities of the left and right sides of the brain. You will learn how information is transmitted to these two hemispheres and about the unique function of each. Hemispheric Connections What is the name of the band of fibers c ...
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.