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Related Concept Videos

Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

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The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
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Myasthenia Gravis: Diagnostic Tests01:15

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Myasthenia gravis is an autoimmune condition affecting neuromuscular transmission, causing generalized weakness in skeletal muscles. Initial diagnoses rely on patients' signs, symptoms, and medical history. The challenge lies in distinguishing myasthenia from other muscular dystrophies. An important diagnostic feature is the significant improvement of symptoms after administering anticholinesterase inhibitors.
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Chemical Synapses01:26

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Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
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Chemical Synapses01:26

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Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
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Myasthenia Gravis: Overview and Treatment01:20

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Myasthenia gravis is a neuromuscular transmission disorder characterized by weakness and increased fatigability of skeletal muscles. It is an autoimmune disease affecting approximately one in 2000 people, where antibodies against the α1 subunit of nicotinic acetylcholine receptors are produced.
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Neuromuscular Junction And Blockade01:29

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The site of chemical communication between a motor neuron and a muscle fiber is called the neuromuscular junction (NMJ). The end of the motor neuron at the NMJ divides into a cluster of synaptic end bulbs. The cytoplasm of these bulbs consists of synaptic vesicles enclosing acetylcholine molecules, the principal neurotransmitter released at the NMJ. The region opposite the synaptic bulb that ends in the muscle fiber is called the motor end plate, which has acetylcholine receptors. Within the...
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Related Experiment Video

Updated: Mar 14, 2026

Systemic Delivery of MicroRNA Using Recombinant Adeno-associated Virus Serotype 9 to Treat Neuromuscular Diseases in Rodents
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Neuromuscular Diseases.

Brett M Morrison1

  • 1Department of Neurology, The Johns Hopkins University, Baltimore, Maryland.

Seminars in Neurology
|October 6, 2016
PubMed
Summary
This summary is machine-generated.

Diagnosing neuromuscular diseases can be challenging due to various injury sites. This review highlights clinical presentations and electromyography to help localize injury and guide treatment for these peripheral nervous system disorders.

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Area of Science:

  • Neurology
  • Clinical Neuroscience
  • Peripheral Nervous System Disorders

Background:

  • Neuromuscular diseases encompass a wide range of conditions affecting peripheral nerves and muscles.
  • These disorders can originate from various sites, including nerve cell bodies, axons, Schwann cells, the neuromuscular junction, or muscle tissue itself.
  • While some conditions like amyotrophic lateral sclerosis (ALS) involve the central nervous system, most neuromuscular diseases are confined to the peripheral nervous system.

Purpose of the Study:

  • To review key clinical features aiding in the localization of injury sites within neuromuscular diseases.
  • To discuss fundamental principles of electromyography (EMG) for diagnostic purposes.
  • To provide practical insights for diagnosing and managing specific neuromuscular conditions.

Main Methods:

  • Review of clinical presentation characteristics for localizing injury.
  • Explanation of basic electromyography principles.
  • Discussion of diagnostic and treatment pearls for specific neuromuscular diseases.

Main Results:

  • Clinical presentation provides crucial clues for identifying the location of neuromuscular dysfunction.
  • Electromyography is a key diagnostic tool for assessing nerve and muscle health.
  • Effective diagnosis and treatment depend on accurately localizing the site of injury.

Conclusions:

  • Accurate localization of injury is essential for diagnosing and managing neuromuscular diseases.
  • Clinical examination and electromyography are vital components of the diagnostic process.
  • This review offers practical guidance for clinicians encountering patients with neuromuscular disorders.