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  Encyclopedia of Keywords > Axon > Neuron   Michael Charnine

Keywords and Sections
PRESYNAPTIC NEURONS
PRESYNAPTIC NEURON
MOTOR NEURON DISEASE
MOLECULES
THOUSANDS
TYPES
ACTION
NEURON DOCTRINE
TRANSMITTING
FIRE
FIRING
ELECTRODE
SCIENTISTS
VERTEBRATES
ISOLATE
EXTENSIONS
PATHWAYS
NEGATIVELY
GLANDS
GLAND
CENTRAL PART
CHEMICALS
SEROTONIN
PURKINJE CELLS
CEREBELLUM
CHEMICAL
PROCESSES
GLUTAMATE
THALAMUS
LOWER MOTOR NEURONS
MUSCLES
NUCLEUS
ORGANELLES
BRAIN DAMAGE
CNS
THREE PARTS
MEMBRANE
NERVE FIBERS
NERVE
STRUCTURE
HUMAN BRAIN
MYELIN
GRAY MATTER
INFORMATION
SIGNAL
SPINAL CORD
Review of Short Phrases and Links

    This Review contains major "Neuron"- related terms, short phrases and links grouped together in the form of Encyclopedia article.

Definitions

  1. A neuron is a specialized cell which conducts electrochemical impulses. (Web site)
  2. A neuron is made up of three parts: a dendrite, cell body and axon. (Web site)
  3. Neuron is the "European UCAV technology demonstrator".
  4. Neuron (or neurone) is one of the two major classes of cell within the nervous system.
  5. The neuron is the basic nerve cell of the nervous system, however, the nervous system contains many types of cells other than nerve cells. (Web site)

Presynaptic Neurons

  1. They propagate in the neuron, are transferred to its presynaptic terminals and then transported to the cell bodies of the presynaptic neurons.

Presynaptic Neuron

  1. The first neuron in this pathway is referred to as the preganglionic or presynaptic neuron. (Web site)
  2. Some of the norepinephrine released from presynaptic noradrenergic neurons recycled in the presynaptic neuron by a reuptake mechanism.
  3. The neurotransmitter diffuses across the narrow gap, called the synaptic cleft, which separates the presynaptic neuron from the postsynaptic cell. (Web site)

Motor Neuron Disease

  1. The term is coined to describe the neuronal injury that results from the presence of excess glutamate in the brain, seen in motor neuron disease.

Molecules

  1. Neurotransmitters are molecules that are used to carry signals from one neuron to another. (Web site)

Thousands

  1. One neuron may communicate with thousands of other neurons, and many thousands of neurons are involved with even the simplest behavior. (Web site)
  2. The cell membrane of a neuron contains thousands of tiny molecules known as GATES. (Sodium and Potassium).

Types

  1. Every neuron communicates with other neurons or with other types of cells.
  2. Types of neurons in Nervous system medulla: A neuron can be sensory or motor but not both.
  3. Motor neuron - Types of Neurons;" Motor neurons are also called as the efferent neuron.

Action

  1. Such action reduces the number of receptors in the neuron.
  2. This action is mediated by an inhibitory interneuron interposed between the afferent neuron and the motor neuron.
  3. The path an impulse takes, from a particular neuron to another one, determines the meaning of that impulse and the action it evokes. (Web site)

Neuron Doctrine

  1. The neuron doctrine is the now fundamental idea that neurons are the basic structural and functional units of the nervous system.
  2. Cajal was the first to see how neurons interact in the brain, laying the foundation for what came to be known as the neuron doctrine. (Web site)
  3. This became known as the neuron doctrine, one of the central tenets of modern neuroscience.

Transmitting

  1. When a neuron is not transmitting an impulse, the neuron is said to be at rest.

Fire

  1. If the neuron does not reach this critical threshold level, then no action potential will fire. (Web site)

Firing

  1. Homosynaptic plasticity is activity-dependent and associative, because it associates the firing of a postsynaptic neuron with that of the presynaptic neuron.
  2. The rasters show the firing of the neuron over seven trials at each spatial position.
  3. Without reuptake, the molecules might continue to stimulate or inhibit the firing of the postsynaptic neuron. (Web site)

Electrode

  1. If the electrode is a microelectrode, with a tip size of about 1 micrometre, the electrode will usually detect the activity of at most one neuron. (Web site)
  2. The electrode picks up extremely clear signals since it reads neuron firing directly from the brain.

Scientists

  1. Studies also will allow scientists to track the molecular steps that the cell goes through as it evolves into the nerve cell, or neuron, it produces. (Web site)

Vertebrates

  1. The monosynaptic arc, or myotatic reflex, maintains tonus and posture in vertebrates and consists of two neurons, a sensory and a motor neuron. (Web site)

Isolate

  1. We envisage several possible mechanisms which could serve to isolate the MT quantum state from its environment within the neuron. (Web site)
  2. In some embodiments, hardware is used to isolate the activity of a single neuron from the population of neurons. (Web site)

Extensions

  1. A bipolar cell is a type of neuron which has two extensions. (Web site)

Pathways

  1. As you grow and learn, messages travel from one neuron to another over and over, creating connections, or pathways, in the brain. (Web site)
  2. Thus, a neuron can receive and transmit many impulses over a variety of pathways, connecting with many different neurons at the same time. (Web site)
  3. In both pathways, primary sensory neuron cell bodies are found in the dorsal root ganglia and their central axons project into the spinal cord.

Negatively

  1. At resting potential, the inside of the neuron is more negatively charged than the outside of the neuron. (Web site)

Glands

  1. A typical neuron has about 1,000 to 10,000 synapses (that is, it communicates with 1,000-10,000 other neurons, muscle cells, glands, etc.).

Gland

  1. The motor neuron then transmits the impulse through other motor neurons to a muscle or gland, where some type of response occurs.
  2. Postganglionics are those axons of the second neuron that travel from the ganglia to the target organ or gland. (Web site)

Central Part

  1. The soma is the central part of the neuron. (Web site)

Chemicals

  1. Neurotransmitters are chemicals that are used to relay, amplify and modulate electrical signals between a neuron and another cell. (Web site)
  2. Neurotransmitters - Chemicals that are used to relay, amplify and modulate signals between a neuron and another cell. (Web site)

Serotonin

  1. In the snail aplysia a facilitating interneuron releases serotonin onto the presynaptic terminal of a neuron.

Purkinje Cells

  1. However, each neuron has only one axon (examples: spinal motor neurons, pyramidal neurons, Purkinje cells). (Web site)

Cerebellum

  1. Purkinje cells, huge neurons in the cerebellum, a type of Golgi I multipolar neuron. (Web site)

Chemical

  1. When a neuron is stimulated (depolarized), a neuron must release the chemical. (Web site)

Processes

  1. A neuron consists of a cell body and its processes: an axon and one or more dendrites.
  2. A neuron having two processes is bipolar, and one with three or more processes is multipolar. (Web site)
  3. A bipolar neuron has two processes: one axon and one dendrite.

Glutamate

  1. The excess of glutamate also may lead to neuron death through a process called excitotoxicity, in which neurons die because they become overstimulated. (Web site)
  2. About half of the brain's fast synapses excite a target neuron, mostly with glutamate.

Thalamus

  1. This axon then continues the ascent through the neuraxis to the thalamus, where it synapses with the third neuron. (Web site)
  2. In the thalamus, the interneuron synapses with the cell body of the third neuron. (Web site)

Lower Motor Neurons

  1. The upper motor neuron axons then synapse on lower motor neurons in the Anterior horn of the spinal cord. (Web site)
  2. In some motor neuron diseases, only the upper motor neurons are affected, or only the lower motor neurons. (Web site)
  3. Damage to lower motor neurons, lower motor neuron lesions (LMNL) cause decreased tone, decreased strength and decreased reflexes in affected areas. (Web site)

Muscles

  1. The neuron sends messages along the axon to other neurons or directly to muscles or glands.
  2. In muscle stimulation disorders (motor neuron disorders), motor nerves do not stimulate muscles normally.

Nucleus

  1. A neuron consists of a nucleus within a cell body and one or more processes (extensions) called dendrites and axons.

Organelles

  1. Describe a neuron, including its shape and distribution of organelles within the cell body, axon and dendrites.

Brain Damage

  1. Anything that disturbs the normal pattern of neuron activity - from illness to brain damage to abnormal brain development - can lead to seizures.
  2. Non-Ideopathic Synesthesia can be caused by seizures, drugs, neuron degeneration, brain damage, spinal cord damage and concussions. (Web site)

Cns

  1. In another embodiment, an agent of the invention is administered such that it comes into contact with a CNS tissue or a CNS neuron.
  2. When a portion of the CNS is damaged (Neuron or Axon), Astrocyte processes enlarge and replace the damaged tissue. (Web site)
  3. In a further embodiment, the CNS tissue is the superficial dorsal horn, in afurther embodiment, a lamina I neuron.

Three Parts

  1. A typical neuron is divided into three parts: the soma or cell body, dendrites, and axon. (Web site)

Membrane

  1. The membrane of the neuron holds negatively charged protein molecules. (Web site)
  2. If so, an action potential occurs and spreads along the membrane of the post-synaptic neuron (in other words, the impulse will be transmitted).

Nerve Fibers

  1. Neurons The neuron has two important structures called the dendrite and axon, also called nerve fibers. (Web site)

Nerve

  1. A nerve is an enclosed, cable-like bundle of axons (the long, slender projection of a neuron).
  2. Neurology (from Greek νεῦρον, neuron, "nerve"; and -λογία, -logia) is a medical specialty dealing with disorders of the nervous system. (Web site)
  3. Greek. neuron = nerve and dendrite (see above).

Structure

  1. The dendrites of a neuron are cellular extensions with many branches, and metaphorically this overall shape and structure is referred to as a dendritic tree.
  2. All neurons are similar in structure to a motor neuron. (Web site)
  3. The image below illustrates the structure of a typical neuron. (Web site)

Human Brain

  1. In the human brain, there is roughly one glia for every neuron with a ratio of about two neurons for every three glia in the cerebral gray matter.
  2. The human brain has some 10 to the power of 11 neurons and each neuron may have tens of thousands of synaptic inputs and input weights. (Web site)
  3. Neuron. 2001; 37(4):719–725. [ PubMed] Faillenot I, Decety J, Jeannerod M. Human brain activity related to the perception of spatial features of objects.

Myelin

  1. Myelin is a dielectric (electrically insulating) material that forms a layer, the myelin sheath, usually around only the axon of a neuron. (Web site)
  2. If the myelin is sufficiently damaged the nerve impulse is not transmitted to the adjacent neuron. (Web site)

Gray Matter

  1. The cell bodies of the sensory neurons are in the dorsal root ganglion, but the motor neuron cell bodies are in the gray matter. (Web site)
  2. Recall that the model requires each neuron in the gray matter to establish connections with n nearest neighbors. (Web site)
  3. Dr. Ashtari's study found the autistic children had increased gray matter in brain regions of the parietal lobes implicated in the mirror neuron system. (Web site)

Information

  1. An axon takes information from the cell body and carries it to the other end of the neuron in order to share the information with other neurons. (Web site)
  2. First, a neuron receives information from the external environment or from other neurons. (Web site)
  3. However, information is transmitted from a neuron to another cell at the synapse. (Web site)

Signal

  1. Scientists have learned a great deal about neurons by studying the synapse—the place where a signal passes from the neuron to another cell. (Web site)
  2. Dendrites are the points through which signals from adjacent neurons enter a particular neuron (the signal is then transmitted to the cell body).
  3. The resulting depolarization of the neuron stimulates it to signal the brain. (Web site)

Spinal Cord

  1. The next neuron is the interneuron, they are the spinal cord and brain, and they process incoming impulse and pass responses onto the motor neurons.
  2. Neuron can be found in the brain, peripheral nerves, and spinal cord in vertebrates and ventral nerve cord in invertebrates. (Web site)
  3. The final neuron is the motor neuron, they carry the responding impulse away from the brain and spinal cord to amuse or gland.

Categories

  1. Axon
  2. Neurons
  3. Cell
  4. Encyclopedia of Keywords > Nature > Impulse
  5. Medicine > Anatomy > Neuroanatomy > Nervous System

Related Keywords

    * Action Potential * Action Potentials * Afferent Neuron * Afferent Neurons * Axon * Axons * Axon Hillock * Body * Brain * Cajal * Cell * Cells * Cell Bodies * Cell Body * Central Nervous System * Cerebral Cortex * Connections * Dendrite * Dendrites * Dopamine * Effector * Electrical * Gap * Gland Cells * Impulse * Impulses * Input * Inputs * Jell-O * Motor * Motor Neuron * Muscle * Muscle Cell * Muscle Fiber * Muscle Fibers * Nerves * Nerve Cell * Nerve Cells * Nerve Impulse * Nerve Impulses * Nervous System * Neuronal * Neurons * Neuron Cell Body * Neurotransmitter * Neurotransmitters * Part * Pyramidal Cell * Receptive Field * Receptor * Receptors * Refractory Period * Retina * Sensory * Sensory Neuron * Signals * Small Space * Sodium Ions * Soma * Stimulus * Synapse * Synapses * Type
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  Short phrases about "Neuron"
  Originally created: August 01, 2010.
  Links checked: January 08, 2013.
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