Nerve Fiber Classification Nerve fibers are classified according to:
... G-protein activation works by controlling production of second messengers such as cyclic AMP, cyclic GMP, diacylglycerol, or Ca++ which open or close ion channels or activate kinase enzymes that initiate an enzymatic ...
... G-protein activation works by controlling production of second messengers such as cyclic AMP, cyclic GMP, diacylglycerol, or Ca++ which open or close ion channels or activate kinase enzymes that initiate an enzymatic ...
Heterogeneity of the Population of Command Neurons in the Lamprey
... Figure 2. Experimental design and presentation of data. A, Experimental design for studying segmental functional projections of RS neurons. The brainstem and spinal cord were positioned in a chamber divided by a Barrier. The brainstem was positioned in one pool and perfused with Ringer’s solution; t ...
... Figure 2. Experimental design and presentation of data. A, Experimental design for studying segmental functional projections of RS neurons. The brainstem and spinal cord were positioned in a chamber divided by a Barrier. The brainstem was positioned in one pool and perfused with Ringer’s solution; t ...
embj201593518-sup-0001
... in this zone, a squared region of interest (ROI) was used to count the number of vesicles and to calculate their density. The length of the active zone and also the length, depth and total area of the PSDs were measured manually in the images using ImageJ software. In addition, the size of the posts ...
... in this zone, a squared region of interest (ROI) was used to count the number of vesicles and to calculate their density. The length of the active zone and also the length, depth and total area of the PSDs were measured manually in the images using ImageJ software. In addition, the size of the posts ...
Cell Surface Molecules Containing IV
... yellow-stained neurons were made with a 63 x Plan Neofluor objective (N.A. 1.3) and a camera lucida, using a wide-band fluorescein filter set. Cells were selected for reconstruction based on extensive filling of axon collaterals, and cells with evident truncation of axons were not used. However, som ...
... yellow-stained neurons were made with a 63 x Plan Neofluor objective (N.A. 1.3) and a camera lucida, using a wide-band fluorescein filter set. Cells were selected for reconstruction based on extensive filling of axon collaterals, and cells with evident truncation of axons were not used. However, som ...
Cellular-synaptic generation of EEG activity
... combined with decreased distance between the recording sites are required for high spatial resolution and for making interpretation of the underlying cellular events possible. Progress in this field is expected to be accelerated by the availability of micromachined silicon-based probes with numerous ...
... combined with decreased distance between the recording sites are required for high spatial resolution and for making interpretation of the underlying cellular events possible. Progress in this field is expected to be accelerated by the availability of micromachined silicon-based probes with numerous ...
Bi150 (2005)
... •The ‘mapping’ of these compounds probably occurs by matching to memory templates stored in the brain • A smell is categorized based on one’s previous experiences of it and on the other sensory stimuli correlated with its appearance. ...
... •The ‘mapping’ of these compounds probably occurs by matching to memory templates stored in the brain • A smell is categorized based on one’s previous experiences of it and on the other sensory stimuli correlated with its appearance. ...
Electrical Properties of Hypothalamic Neuroendocrine Cells
... secretory morphology characteristic of gland cells have been identified in the hypothalamus of all classes of vertebrates (34, 45). It is now well established that these neurosecretory cells form an elongated endocrine gland in which their axons serve as a transport channel for hormone that is produ ...
... secretory morphology characteristic of gland cells have been identified in the hypothalamus of all classes of vertebrates (34, 45). It is now well established that these neurosecretory cells form an elongated endocrine gland in which their axons serve as a transport channel for hormone that is produ ...
Homework
... the nervous system in maintaining homeostasis? 4. How do the sympathetic and parasympathetic nervous systems regulate the body? 5. Science and Technology: How are stem cells being used to treat spinal cord injuries? ...
... the nervous system in maintaining homeostasis? 4. How do the sympathetic and parasympathetic nervous systems regulate the body? 5. Science and Technology: How are stem cells being used to treat spinal cord injuries? ...
CHAPTER 10 THE SOMATOSENSORY SYSTEM
... 10.2.2. Spinal cord and brain pathways. Touch and proprioceptive information is transmitted to the thalamus via large diameter fibers that run in the dorsal columns of the spinal cord and medial lemniscus in the brain. Information about temperature and pain is transmitted to the thalamus via small d ...
... 10.2.2. Spinal cord and brain pathways. Touch and proprioceptive information is transmitted to the thalamus via large diameter fibers that run in the dorsal columns of the spinal cord and medial lemniscus in the brain. Information about temperature and pain is transmitted to the thalamus via small d ...
Interactions between Segmental Homologs and between
... has six first-order branches approximately perpendicular to the main projection (see Fig. 1A). The major projection extends along the middle annulus of the five that make up a segment, and the first-order branches extend about three to four annuli anteriorly and posteriorly, into the adjacent segmen ...
... has six first-order branches approximately perpendicular to the main projection (see Fig. 1A). The major projection extends along the middle annulus of the five that make up a segment, and the first-order branches extend about three to four annuli anteriorly and posteriorly, into the adjacent segmen ...
Spinal Nerves - Buckeye Valley
... dorsal root ganglion • Whole nerve "trunk" lies in intervertebral foramen ...
... dorsal root ganglion • Whole nerve "trunk" lies in intervertebral foramen ...
Chapter 2: Psychology As a Science
... Nodes of Ranvier The nodes of Ranvier are the regions of bare axon that are between areas wrapped in myelin. Action potentials travel down the axon by jumping from node to node. ...
... Nodes of Ranvier The nodes of Ranvier are the regions of bare axon that are between areas wrapped in myelin. Action potentials travel down the axon by jumping from node to node. ...
Chapter 8 The Nervous System
... neurons are located in the gray matter of the thoracic and upper lumbar segments of the spinal cord • Axons leave the spinal cord in the anterior roots of spinal nerves, extend to sympathetic or collateral ganglia, and synapse with several postganglionic neurons whose axons extend to spinal or auton ...
... neurons are located in the gray matter of the thoracic and upper lumbar segments of the spinal cord • Axons leave the spinal cord in the anterior roots of spinal nerves, extend to sympathetic or collateral ganglia, and synapse with several postganglionic neurons whose axons extend to spinal or auton ...
Ch. 38 Review Know parts of and function of the central nervous
... Know how neurons communicate with other neurons Know the types receptors found in the eye Know what organs are used in the senses of hearing and balance Know the different classes of receptors and what they are stimulated by Know the major parts of the brain, their functions, be able to identify on ...
... Know how neurons communicate with other neurons Know the types receptors found in the eye Know what organs are used in the senses of hearing and balance Know the different classes of receptors and what they are stimulated by Know the major parts of the brain, their functions, be able to identify on ...
powerpoint
... •The ‘mapping’ of these compounds probably occurs by matching to memory templates stored in the brain • A smell is categorized based on one’s previous experiences of it and on the other sensory stimuli correlated with its appearance. ...
... •The ‘mapping’ of these compounds probably occurs by matching to memory templates stored in the brain • A smell is categorized based on one’s previous experiences of it and on the other sensory stimuli correlated with its appearance. ...
HECTtype E3 ubiquitin ligases in nerve cell development and
... radial glial cells (RGCs). These span the entire cortical plate, contacting the marginal and ventricular zones. RGCs retain the potential to self-renew to increase their pool, while their asymmetric divisions produce premature neurons and intermediate progenitors. In the subventricular zone, each in ...
... radial glial cells (RGCs). These span the entire cortical plate, contacting the marginal and ventricular zones. RGCs retain the potential to self-renew to increase their pool, while their asymmetric divisions produce premature neurons and intermediate progenitors. In the subventricular zone, each in ...
Synapse formation in developing neural circuits.
... synapses, or synaptic transmission. It is therefore befitting that the actual term ‘‘synapse’’ was not coined by a neuroanatomist, but by a physiologist named Charles Sherrington. Sherrington coined the term ‘‘synapse’’ to refer to the special connections from one nerve cell to another that facilita ...
... synapses, or synaptic transmission. It is therefore befitting that the actual term ‘‘synapse’’ was not coined by a neuroanatomist, but by a physiologist named Charles Sherrington. Sherrington coined the term ‘‘synapse’’ to refer to the special connections from one nerve cell to another that facilita ...
Reconstruction of the nigrostriatal dopamine pathway in the adult
... 1995; Bentlage et al., 1999) and that the supply of exogenous growth factors, such as glial cell line-derived neurotrophic factor (GDNF), may be used to overcome this obstacle (Wang et al., 1996; Wilby et al., 1999). Interestingly, studies of neural transplants in other areas of the adult central ne ...
... 1995; Bentlage et al., 1999) and that the supply of exogenous growth factors, such as glial cell line-derived neurotrophic factor (GDNF), may be used to overcome this obstacle (Wang et al., 1996; Wilby et al., 1999). Interestingly, studies of neural transplants in other areas of the adult central ne ...
File
... prioritize information and to focus on many different things at once. • People with low levels of GABA neurotransmitters can suffer from certain anxiety disorders, panic disorders, and Parkinson’s disease. • Certain drugs, like caffeine, inhibits the release of GABA causing your brain to become ‘mor ...
... prioritize information and to focus on many different things at once. • People with low levels of GABA neurotransmitters can suffer from certain anxiety disorders, panic disorders, and Parkinson’s disease. • Certain drugs, like caffeine, inhibits the release of GABA causing your brain to become ‘mor ...
Electrophysiology applications 1
... Another preparation that has been used to great advantage in understanding the cellular effects of opiates is the locus coeruleus (LC) slice. The extensive studies of opiates in LC slices by Aghajanian and colleagues and by North, Williams, and coworker are described in more detail in Foote and Asto ...
... Another preparation that has been used to great advantage in understanding the cellular effects of opiates is the locus coeruleus (LC) slice. The extensive studies of opiates in LC slices by Aghajanian and colleagues and by North, Williams, and coworker are described in more detail in Foote and Asto ...
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.