Chapter 3 Synapses
... • Two EPSPs in rapid succession at one synapse are additive • Same for IPSPs Spatial Summation • Synaptic inputs from separate locations combine their effects on a neuron ...
... • Two EPSPs in rapid succession at one synapse are additive • Same for IPSPs Spatial Summation • Synaptic inputs from separate locations combine their effects on a neuron ...
Neuron Types, structure and function_PowerPoint
... Dendron and Dendrites: Nerve fibres that transmit nerve impulse towards cell body. End branches of dendrons are dendrites. Dendrites receive nerve impulses from other neurons. Cell body: cell body of motor neuron is irregular in shape. It contains the nucleus and controls cell activities Axon: nerve ...
... Dendron and Dendrites: Nerve fibres that transmit nerve impulse towards cell body. End branches of dendrons are dendrites. Dendrites receive nerve impulses from other neurons. Cell body: cell body of motor neuron is irregular in shape. It contains the nucleus and controls cell activities Axon: nerve ...
Peripheral Nervous System
... the axon is electrical Transmission across the synapse is chemical Neurotransmitters include ACh, GABA, serotonin ...
... the axon is electrical Transmission across the synapse is chemical Neurotransmitters include ACh, GABA, serotonin ...
CLASS #1: 9 Jan 2001
... Genetic info in nucleus is transcribed to mRNA. The mRNA* moves into the C ...
... Genetic info in nucleus is transcribed to mRNA. The mRNA* moves into the C ...
Types of Neuron and their function - Click here
... its axon, it has travelled as an action potential, or a pulse of electricity. However, there is no cellular continuity between one neuron and the next; there is a gap called synapse. The membranes of the sending and receiving cells are separated from each other by the fluid-filled synaptic gap. The ...
... its axon, it has travelled as an action potential, or a pulse of electricity. However, there is no cellular continuity between one neuron and the next; there is a gap called synapse. The membranes of the sending and receiving cells are separated from each other by the fluid-filled synaptic gap. The ...
9-5_Neuronal connections of the cerebellar cortex excitatory
... nuclei. Proper functioning of the neuronal pathway between mossy fibers, granular cells, parallel fibers, climbing fibers and Purkinje cells are thought to be essential for coordinated muscular movement. The excitatory elements are the follows granule cells, mossy fibers and climbing fibers. Granule ...
... nuclei. Proper functioning of the neuronal pathway between mossy fibers, granular cells, parallel fibers, climbing fibers and Purkinje cells are thought to be essential for coordinated muscular movement. The excitatory elements are the follows granule cells, mossy fibers and climbing fibers. Granule ...
Nervous System - Winston Knoll Collegiate
... A low intensity message would be produced when only the most sensitive neurons fire, while high intensity messages occur as most or all of the neurons are actively sending impulses ...
... A low intensity message would be produced when only the most sensitive neurons fire, while high intensity messages occur as most or all of the neurons are actively sending impulses ...
Nervous System
... As Na+ goes into cell, neuron goes from being polarized to depolarized When inside becomes positive, polarization is removed and the threshold is reached K+ ions move outside, Na+ ions stay inside membrane Refractory period returns everything ...
... As Na+ goes into cell, neuron goes from being polarized to depolarized When inside becomes positive, polarization is removed and the threshold is reached K+ ions move outside, Na+ ions stay inside membrane Refractory period returns everything ...
Ch 31: Urinary System
... - a brief change in the electrical charges found on either side of the nerve cell membrane - travels from the cell body to the end of the axon - always the same strength regardless of stimulus ...
... - a brief change in the electrical charges found on either side of the nerve cell membrane - travels from the cell body to the end of the axon - always the same strength regardless of stimulus ...
Name Date ______ Nervous System and Endocrine System Exam
... 3. The change in the environment that starts an impulse in a receptor is called a ___________________________. 4. The structure that detects a stimulus is called a _____________________________. 5. The reaction to a stimulus is called a __________________________. 6. The ________________________ is ...
... 3. The change in the environment that starts an impulse in a receptor is called a ___________________________. 4. The structure that detects a stimulus is called a _____________________________. 5. The reaction to a stimulus is called a __________________________. 6. The ________________________ is ...
Chapter 48 - cloudfront.net
... membranes are mostly lipids, the sheaths are poor conductor of electricity which allow it provide an electrical insulation for the axon. In the peripheral nervous system (PNS) these sheaths are called oligodendrocytes. In the central nervous system (CNS) they’re known as Schwann cells. The exposed a ...
... membranes are mostly lipids, the sheaths are poor conductor of electricity which allow it provide an electrical insulation for the axon. In the peripheral nervous system (PNS) these sheaths are called oligodendrocytes. In the central nervous system (CNS) they’re known as Schwann cells. The exposed a ...
Lecture 7
... o Nerve – cordlike organ composed of axons bound together by ________________ tissue Mixed nerve – consists of both sensory and motor fibers and transmits signals in ______________ directions (but any one fiber transmits in only one direction) Sensory nerve – consists of sensory axons, including ...
... o Nerve – cordlike organ composed of axons bound together by ________________ tissue Mixed nerve – consists of both sensory and motor fibers and transmits signals in ______________ directions (but any one fiber transmits in only one direction) Sensory nerve – consists of sensory axons, including ...
Chapter 11 Notes
... Without this reflex arc, we would have to receive the pain signal, send it to the brain, have it interpreted, and then formulate the correct response Within this time, a relatively minor burn would become a very serious one ...
... Without this reflex arc, we would have to receive the pain signal, send it to the brain, have it interpreted, and then formulate the correct response Within this time, a relatively minor burn would become a very serious one ...
The Central Nervous System
... Without this reflex arc, we would have to receive the pain signal, send it to the brain, have it interpreted, and then formulate the correct response Within this time, a relatively minor burn would become a very serious one ...
... Without this reflex arc, we would have to receive the pain signal, send it to the brain, have it interpreted, and then formulate the correct response Within this time, a relatively minor burn would become a very serious one ...
Neuroscience - HuskiesScience
... • These neurotransmitters are dumped into the synapse, the space between the axon of one neuron and the dendrite of another ...
... • These neurotransmitters are dumped into the synapse, the space between the axon of one neuron and the dendrite of another ...
9.2 Electrochemical Impulses
... neurotransmitters from the end plate which will diffuse into the dendrites of an adjacent neuron and create a depolarization of the dendrites. The neuron that releases the neurotransmitters is the ...
... neurotransmitters from the end plate which will diffuse into the dendrites of an adjacent neuron and create a depolarization of the dendrites. The neuron that releases the neurotransmitters is the ...
Midterm Review Answers
... 2) Tetraethylammonium (TEA) prevents the action potential from being produced. (T/F) 3) Radioactive TTX is commonly used to determine the density and distribution of voltage dependent Na+ channels. What would you expect the pattern of TTX labeling to be in a … a) myelinated axon TTX labeling would b ...
... 2) Tetraethylammonium (TEA) prevents the action potential from being produced. (T/F) 3) Radioactive TTX is commonly used to determine the density and distribution of voltage dependent Na+ channels. What would you expect the pattern of TTX labeling to be in a … a) myelinated axon TTX labeling would b ...
Neurons
... Sensory neurons (take information outside the system – light, touch…) Motor neurons (provide instructions to muscles and affect glands) Inter-neurons (majority) ...
... Sensory neurons (take information outside the system – light, touch…) Motor neurons (provide instructions to muscles and affect glands) Inter-neurons (majority) ...
TABLE OF CONTENTS
... Dendritic spines: Short outgrowths found on some dendritic branches. Cell body (soma): Contains the nucleus, ribosomes, mitochondria, and other structures found in most cells. Axon: A long, thin fiber (usually longer than dendrites), which is the information-sending part of the neuron, sending an el ...
... Dendritic spines: Short outgrowths found on some dendritic branches. Cell body (soma): Contains the nucleus, ribosomes, mitochondria, and other structures found in most cells. Axon: A long, thin fiber (usually longer than dendrites), which is the information-sending part of the neuron, sending an el ...
W3005 1/29/0 Prof
... these possibilities experimentally? What accounts for the preference for porn? LeTourneau went on to show that the effects of the various substrates that he used could be accounted for by the ability of the growth cone to stick or adhere to the substrate. This observation lead to a search for adhesi ...
... these possibilities experimentally? What accounts for the preference for porn? LeTourneau went on to show that the effects of the various substrates that he used could be accounted for by the ability of the growth cone to stick or adhere to the substrate. This observation lead to a search for adhesi ...
Nervous System
... -generated at axon hillock—results in a large spike in voltage across the membrane as ions flow across the axon membrane—this spike tends to travel down the axon to the axon terminus where it triggers neurotransmitter release at the synapse -only triggered when voltage at hillock is greater than thr ...
... -generated at axon hillock—results in a large spike in voltage across the membrane as ions flow across the axon membrane—this spike tends to travel down the axon to the axon terminus where it triggers neurotransmitter release at the synapse -only triggered when voltage at hillock is greater than thr ...
Axon
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An axon (from Greek ἄξων áxōn, axis), also known as a nerve fibre, is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body. The function of the axon is to transmit information to different neurons, muscles and glands. In certain sensory neurons (pseudounipolar neurons), such as those for touch and warmth, the electrical impulse travels along an axon from the periphery to the cell body, and from the cell body to the spinal cord along another branch of the same axon. Axon dysfunction causes many inherited and acquired neurological disorders which can affect both the peripheral and central neurons.An axon is one of two types of protoplasmic protrusions that extrude from the cell body of a neuron, the other type being dendrites. Axons are distinguished from dendrites by several features, including shape (dendrites often taper while axons usually maintain a constant radius), length (dendrites are restricted to a small region around the cell body while axons can be much longer), and function (dendrites usually receive signals while axons usually transmit them). All of these rules have exceptions, however.Some types of neurons have no axon and transmit signals from their dendrites. No neuron ever has more than one axon; however in invertebrates such as insects or leeches the axon sometimes consists of several regions that function more or less independently of each other. Most axons branch, in some cases very profusely.Axons make contact with other cells—usually other neurons but sometimes muscle or gland cells—at junctions called synapses. At a synapse, the membrane of the axon closely adjoins the membrane of the target cell, and special molecular structures serve to transmit electrical or electrochemical signals across the gap. Some synaptic junctions appear partway along an axon as it extends—these are called en passant (""in passing"") synapses. Other synapses appear as terminals at the ends of axonal branches. A single axon, with all its branches taken together, can innervate multiple parts of the brain and generate thousands of synaptic terminals.