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The Synapse - University of Toronto
The Synapse - University of Toronto

... synaptic cleft, which in turn stimulates NMDA (blue rectangle), AMPA (red, yellow rectangle), and metabotropic (brown membrane protein) glutamate receptors. In the spine, actin cables (vertical pink filaments) are linked to brain spectrin (red, horizontal molecules). Also present in the spine are en ...
Study Guide
Study Guide

... 1. Know the structures of neurons and their general functions. 2. Know locations of the structures of neurons; refer back to Anatomy of Neuron worksheet 3. Know all the neuroglia by name, type of nervous system found in, and their functions; Table 9.1, page 258 will help. 4. Know diseases associated ...
Chemical Communication PowerPoint
Chemical Communication PowerPoint

... between neurons with specific reference to the synapse (synaptic vesicles, synaptic cleft and receptor sites), neurotransmitters (excitatory and inhibitory), drugs (agonists and antagonists) and reuptatke. ...
Design principles of sensory receptors
Design principles of sensory receptors

... released sex-pheromone blend. It becomes apparent that depending on the stimulus properties different signal transduction pathways are recruited. Furthermore, the sensitivity of receptor neurons is regulated in a circadian manner to achieve highest sensitivity during the moth’s activity phase and to ...
module 6 - sandrablake
module 6 - sandrablake

... An interesting fact about how a neuron fires is called the all-or-none principle. This means that a neuron always fires with the same intensity no matter what the stimulation is. It doesn’t matter if there is a strong stimulation or weak stimulation at the cell’s dendrites. As long as there is enoug ...
Upper and Lower Motor Neuron Lesions
Upper and Lower Motor Neuron Lesions

... and hence, from each other. • Injury potentials are still generated along the terminals leading to asynchronous contraction of the individual ms fibers attached to terminals. • Invisible to the observer and detected only by ...
rview
rview

... functioning of the postsynaptic neuron. C) dendrites release synaptic vesicles, which open the sodium channels of the postsynaptic neuron. D) the axon releases neurotransmitters that bind to and open potassium channels between the presynaptic and postsynaptic neurons. 35. What are the two types of c ...
presentation
presentation

... The Preganglionic fiber is the axon within the cell body that is located in the brain and spinal cord in which it travels through the CNS and synapse with the neurons within an autonomic ganglion. The Postganglionic fiber is the axon within the second cell body that run from the ganglion to the effe ...
P312Ch02_Nervous System, Neurons Lecture
P312Ch02_Nervous System, Neurons Lecture

... 1960–DeValois discovered lateral geniculate cells that respond in an opponent process fashion 1961–Von Bekesy awarded Nobel Prize for work on function of the cochlea 1981–Hubel and Wiesel shart Nobel Prize for discoveries of functions of the visual system 1983 Dartnall, Bowmaker, & Mollon validate e ...
Spinal Cord and Spinal Nerves
Spinal Cord and Spinal Nerves

... Neurons with specific functions can be found in the gray matter Dorsal horns contain interneurons and cell bodies Sensory neurons enter through dorsal root ganglion Motor neurons send their signals through the ventral root ...
Nervous System Structure and Function Pt 1
Nervous System Structure and Function Pt 1

... body, and responds to external and internal stimuli. Irritability • The basic unit of structure and function in the nervous system are specialized cells called neurons. ...
nervous system
nervous system

... 1- Endocrine system (chemical regulation): is a collection of blood carrying chemical messengers (hormones) with slow and long standing action. 2-Nervous ...
PDF
PDF

... Functional interactions between the cochlear nuclei (CN) could be an important step in binaural integration underlying directional hearing. Most available evidence for commissural interactions of two CN lack, however, direct correlation between the functional properties of involved pathways and targ ...
PDF
PDF

... ventral to adjacent dorsal areas covered by Robo3+ axons in a ∼500 µm segment of the cervical-thoracic spinal cord (Fig. 2G-K). Both Ntn1trap/trap and Ntn1−/− mutants displayed highly disorganized commissural axons that were often oriented away from the midline. However, the degree of crossing was s ...
0pt20pt [1.44]Spike Train Correlations Induced [1ex] [1.44]by
0pt20pt [1.44]Spike Train Correlations Induced [1ex] [1.44]by

... the number of its outgoing edges is called out-degree. In the adjacency matrix, the in-degree is the sum of all entries in the corresponding row. The out-degree is the sum of all entries in the corresponding column. ...
Axon Initiation and Growth Cone Turning on Bound Protein Gradients Cellular/Molecular Junyu Mai,
Axon Initiation and Growth Cone Turning on Bound Protein Gradients Cellular/Molecular Junyu Mai,

... Figure 2. Axon initiation and growth cone turning on bound netrin-1 gradients. Hippocampal neurons were cultured for 40 h on bound netrin-1 gradient created by 10-min diffusive printing using 100 ␮g/ml netrin-1. a, b, Images of two representative neurons immunostained for neuron- and axon-specific m ...
Long, intrinsic horizontal axons radiating through and beyond rat
Long, intrinsic horizontal axons radiating through and beyond rat

... were made into PMBSF. Anterograde transport of the tracer revealed cases where long, intrinsic horizontal axons projected through gray matter out from PMBSF and across boundaries into visual and auditory cortical areas (Frostig et al. 2008; Stehberg et al. 2014). Similar long-range horizontal projec ...
Evolution of the Nervous System
Evolution of the Nervous System

... stimulus larger than the threshold Gated channel proteins Suddenly allows sodium to pass through the membrane ...
Evolution of the Nervous System
Evolution of the Nervous System

... stimulus larger than the threshold Gated channel proteins Suddenly allows sodium to pass through the membrane ...
Role of Glucose-Induced Oxidative Stress - Diabetes
Role of Glucose-Induced Oxidative Stress - Diabetes

... myelinated and unmyelinated fibers (1,2). It has been proposed that high glucose concentrations induce toxicity and cell death in sensory neurons, and this triggers diabetic neuropathy through loss of nerve fibers (3). Cultured embryonic dorsal root ganglion sensory neurons were exposed to high nonp ...
The NERVOUS SYSTEM
The NERVOUS SYSTEM

... relay to CNS  Somatic sensory receptors  External receptors: touch, temp, pressure, sight, etc.  Proprioceptors: monitor position and movement ...
lou gehrig`s disease - Infoscience
lou gehrig`s disease - Infoscience

... For many years, researchers believed that the motor neuron and its various parts die simultaneously. Scientists have now learned, however, that the different compartments of the motor neuron can die by different mechanisms. The cell body, which contains the nucleus of the neuron, usually dies by a p ...
Neurons
Neurons

...  A strong stimulus can trigger more neurons to fire, and to fire more often, but all action potentials are of the ...
Dorsal Horn Structure/Function
Dorsal Horn Structure/Function

... It is clear that both myelinated and unmyelinated afferent fibres that respond to noxious stimulation in the periphery project predominantly to the superficial laminae of the dorsal horn. However, it is also clear that myelinated and unmyelinated fibres that signal the presence of innocuous mechanic ...
multispectral labeling technique to map many neighboring axonal
multispectral labeling technique to map many neighboring axonal

... projections among individual members of a single class of neurons. In a thin rodent muscle, the arbors of many overlapping neurons can be reconstructed by creating a high-resolution confocal montage of the entire set of arbors of all the axons and then reconstructing each6. But this approach does no ...
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Axon guidance

Axon guidance (also called axon pathfinding) is a subfield of neural development concerning the process by which neurons send out axons to reach the correct targets. Axons often follow very precise paths in the nervous system, and how they manage to find their way so accurately is being researched.
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