• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
A Novel Functionally Distinct Subtype of Striatal Neuropeptide Y
A Novel Functionally Distinct Subtype of Striatal Neuropeptide Y

... then incubated in polyclonal antibody against NPY (1:1000; rabbit antineuropeptide Y; ImmunoStar; 22940), SOM (1:1000; rabbit anti-somatostatin; ImmunoStar; 20067), or NOS (1:1000; goat anti-neuronal nitric oxide synthase; Abcam; Ab1376) diluted in a solution containing 1% NDS, 1% BSA, and 0.1% Trit ...
Memantine is a clinically well tolerated N-methyl-D
Memantine is a clinically well tolerated N-methyl-D

... dissociated hippocampal neurones with an IC50 of 1.04 mM at − 100 mV (Parsons et al., 1996). The antagonistic effects of memantine at −70 mV were not influenced by increasing concentrations of glycine (Parsons et al., 1993). Thus, antagonism via interactions at the glycineB site is unlikely. However ...
Control of Extracellular Dopamine at Dendrite and Axon Terminals
Control of Extracellular Dopamine at Dendrite and Axon Terminals

... Comparison of the time course of the dopamine transient in the VTA, SNc, and striatum FSCV with carbon fiber electrodes was used to compare the time course of dopamine release from axonal terminals in the dorsal striatum and dendritic terminals in the VTA. A single stimulus evoked release of dopamin ...
Volume 11 Issue R7 Hand:Peripheral Nerves and Upper Extremity
Volume 11 Issue R7 Hand:Peripheral Nerves and Upper Extremity

... the median nerve at the elbow might result in the loss of all intrinsic muscle functions of the hand, even if the ulnar nerve remains intact. ...
Molecular and Cellular Mechanisms of Reelin Signaling in the Adult
Molecular and Cellular Mechanisms of Reelin Signaling in the Adult

... GABAergic interneurons (iKO). Despite some overlap of Reelin and Dab1 in a subset of GABAergic interneurons, we found that their expression was generally juxtaposed, with Dab1 being primarily expressed by principle neurons and a more widespread population of Reelin-negative GABAergic interneurons. W ...
Neurotoxicity and Mechanism of Toluene Abuse
Neurotoxicity and Mechanism of Toluene Abuse

... reflect actual increased transmission (i.e., if toluene stimulated dopaminergic efferents from the substantia nigra/pars compacta or blocked the dopamine transporter), decreased transmission (i.e., if toluene caused postsynaptic blockade of the dopamine receptor), or any mechanism involving altered ...
ORAL UPF/ TESI DOCT Nicotine addiction phenotypes in a BAC transgenic mouse
ORAL UPF/ TESI DOCT Nicotine addiction phenotypes in a BAC transgenic mouse

... RESUM El cluster genòmic CHRNA5/A3/B4 codifica per les subunitats alfa5, alfa3 i beta4 dels receptors d’acetilcolina (nAChRs). Estudis de genètica humana han revelat que variants en aquesta regió genòmica estan significativament associats a la dependencia a ...
Tinnitus: Causes and Treatment
Tinnitus: Causes and Treatment

... TMJ syndrome is almost always accompanied by pain or limitation of jaw movement. It's caused by grinding or clenching the teeth by excessive gum chewing, arthritis, or teeth malocclusion. Usually there is a clicking sound when the jaw is opened or closed. It is not unusual for TMJ syndrome to cause ...
Descending motor pathways and the spinal
Descending motor pathways and the spinal

... important, because the descending pathways project differently to the upper cervical ventral hom (see section 4 a 2). 1a 2. Phrenic nucleus. The phrenic nucleus occupies a special position among the somatic motoneuronal cell groups, because its motoneurons innervate the diaphragm. Although the diaph ...
The dynamic cytoskeleton: backbone of dendritic spine plasticity
The dynamic cytoskeleton: backbone of dendritic spine plasticity

... microtubules under physiological conditions. Nonetheless it is possible that a population of highly dynamic, unstable microtubules were depolymerized during the fixation process, making the subcellular localization of these microtubules impossible to determine. The absence of microtubules in spines ...
Mechanisms of axon degeneration: From development to disease
Mechanisms of axon degeneration: From development to disease

Homologous Neurons and their Locomotor Functions in Nudibranch
Homologous Neurons and their Locomotor Functions in Nudibranch

... Herrel et al., 2001; Langenbach and Van Eijden, 2001; Wainwright, 2002; though see Smith 1994). It is hypothesized that one of the reasons for this conservation may be the fact that many neural networks are multifunctional, and therefore alterations to one neural element or circuit will have deleter ...
Neural Control - International Continence Society
Neural Control - International Continence Society

... Figure 3. Diagram showing neural circuits controlling continence and micturition. (A) Urine storage reflexes. During the storage of urine, distention of the bladder produces low level vesical afferent firing, which in turn stimulates (1) the sympathetic outflow to the bladder outlet (base and urethr ...
Anatomy & Physiology I
Anatomy & Physiology I

... specialization. This example shows a cold-sensitive receptor. ‫نهایات عصبی ازاد‬ ‫ انها‬.‫نهایات عصبی ازاد دندریت های برهنه نیورون های دسته اول اند‬ ‫ این مثال یک اخذه حساس سردی را‬.‫ساختمان مخصوص ظاهری ندارند‬ ‫نشان میدهد‬ ...
Axonal degeneration as a therapeutic target in the CNS | SpringerLink
Axonal degeneration as a therapeutic target in the CNS | SpringerLink

... descending tracts and incomplete impairment of sensory or motor functions, whereas only a small fraction represents complete transections (Rowland et al. 2008). Next to the initial axonal damage that occurs because of mechanical stress, secondary damage contributes to further dysfunction (Bramlett a ...
Dopaminergic control of the globus pallidus and its impact
Dopaminergic control of the globus pallidus and its impact

Implication of novel neurotransmitter systems in the regulation of
Implication of novel neurotransmitter systems in the regulation of

... a maximum diameter of 10 to 20 µm. The fine structural properties of these neurons do not differ from the general neuronal attributes, except that some of the GnRH nerve cells are ciliated (8, 15). Most of the GnRH neurons show either uni- or bipolar shapes. The dendritic processes of GnRH cells ori ...
The basal forebrain cholinergic projection system in mice. In
The basal forebrain cholinergic projection system in mice. In

... neurons is poorly determined based upon their topography in the basal forebrain, the Ch nomenclature has met with considerable criticism (see Butcher and Semba, 1989). Corticopetal basal forebrain neurons often form dense clusters that are interrupted by regions of low cellular density but there are ...
The Basal Forebrain Cholinergic Projection
The Basal Forebrain Cholinergic Projection

... neurons is poorly determined based upon their topography in the basal forebrain, the Ch nomenclature has met with considerable criticism (see Butcher and Semba, 1989). Corticopetal basal forebrain neurons often form dense clusters that are interrupted by regions of low cellular density but there are ...
Mechanisms of gustatory coding in Spodoptera littoralis
Mechanisms of gustatory coding in Spodoptera littoralis

... neurons project to the central nervous system and how signals are encoded and processed by central neurons. In different insect species, including Lepidoptera, responses of gustatory receptor neurons situated on the tarsae and the abdomen have been described. However, physiological characteristics o ...
Modulation of premotor circuits controlling locomotor activity by
Modulation of premotor circuits controlling locomotor activity by

... or the modulation of locomotor activity. We focused our attention on dissecting the circuit architecture and function of a conserved class of spinal sensory neurons termed cerebrospinal fluid contacting neurons (CSF-cNs). These neurons lie at the interface between the CSF and spinal interneurons con ...
the neurobiology of nicotine addiction: bridging the gap from
the neurobiology of nicotine addiction: bridging the gap from

... regulated by exposure to the agonist: closed, open and desensitized11. When agonists bind to the nAChR, the receptor complex undergoes a conformational change in its structure, which allows the channel gate to open, permitting the passage of cations (such as Na+, K+ and also Ca2+, which might accoun ...
Ethanol Potentiation of Glycine-Induced Responses in Dissociated
Ethanol Potentiation of Glycine-Induced Responses in Dissociated

... with our previous report (Ye, 2000), glycine elicited depolarization and, in some cases, action potentials in VTA neurons from neonatal rats (Fig. 1). This depolarization is explained by a reversal potential for glycine’s action (EGly) that is much more positive (near ⫺25 mV in neonatal neurons) tha ...
Proopiomelanocortin Neurons in Nucleus Tractus Solitarius Are
Proopiomelanocortin Neurons in Nucleus Tractus Solitarius Are

... Breeding, housing, and genotyping of mice. POMC–EGFP transgenic mice were housed on a 14/10 h light/dark cycle at an ambient temperature in the Department of Comparative Medicine murine-specific pathogenfree facility. Mouse chow (Purina Mills, St. Louis, MO) and water were provided ad libitum. Genot ...
Anatomy and Physiology of Smell
Anatomy and Physiology of Smell

1 2 3 4 5 ... 209 >

Neuromuscular junction



A neuromuscular junction (sometimes called a myoneural junction) is a junction between nerve and muscle; it is a chemical synapse formed by the contact between the presynaptic terminal of a motor neuron and the postsynaptic membrane of a muscle fiber. It is at the neuromuscular junction that a motor neuron is able to transmit a signal to the muscle fiber, causing muscle contraction.Muscles require innervation to function—and even just to maintain muscle tone, avoiding atrophy. Synaptic transmission at the neuromuscular junction begins when an action potential reaches the presynaptic terminal of a motor neuron, which activates voltage-dependent calcium channels to allow calcium ions to enter the neuron. Calcium ions bind to sensor proteins (synaptotagmin) on synaptic vesicles, triggering vesicle fusion with the cell membrane and subsequent neurotransmitter release from the motor neuron into the synaptic cleft. In vertebrates, motor neurons release acetylcholine (ACh), a small molecule neurotransmitter, which diffuses across the synaptic cleft and binds to nicotinic acetylcholine receptors (nAChRs) on the cell membrane of the muscle fiber, also known as the sarcolemma. nAChRs are ionotropic receptors, meaning they serve as ligand-gated ion channels. The binding of ACh to the receptor can depolarize the muscle fiber, causing a cascade that eventually results in muscle contraction.Neuromuscular junction diseases can be of genetic and autoimmune origin. Genetic disorders, such as Duchenne muscular dystrophy, can arise from mutated structural proteins that comprise the neuromuscular junction, whereas autoimmune diseases, such as myasthenia gravis, occur when antibodies are produced against nicotinic acetylcholine receptors on the sarcolemma.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report