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Related Concept Videos

Classification of Skeletal Muscle Fibers01:48

Classification of Skeletal Muscle Fibers

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Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions.
Slow-Twitch Muscle Fibers
Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
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Relaxation of Skeletal Muscles01:29

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The period of muscle contraction primarily influences the duration of stimulation at the neuromuscular junction (NMJ), the presence of free calcium ions in the sarcoplasm, and the availability of energy or ATP to support contractions.
When an action potential reaches the axon terminal, it depolarizes the membrane and opens voltage-gated sodium channels. Sodium ions enter the cell, further depolarizing the presynaptic membrane. This depolarization causes voltage-gated calcium channels to open....
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Overview of Skeletal Muscle01:15

Overview of Skeletal Muscle

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Skeletal muscles are composed of a bundle of muscle fibers and are attached to bones through tendons. Each skeletal muscle fiber is a single muscle cell. The sarcolemma, the plasma membrane of a skeletal muscle cell, consists of a lipid bilayer and glycocalyx that supports muscle fibers. The sarcolemma extends into the muscle cells to form tubular structures called transverse or T-tubules. Each side of the T-tubules consists of a membrane-bound structure called the sarcoplasmic reticulum,...
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Skeletal Muscle Anatomy00:55

Skeletal Muscle Anatomy

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Skeletal muscle is the most abundant type of muscle in the body. Tendons are the connective tissue that attaches skeletal muscle to bones. Skeletal muscles pull on tendons, which in turn pull on bones to carry out voluntary movements.
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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
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
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Naming Skeletal Muscles01:19

Naming Skeletal Muscles

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The naming of the approximately 700 muscles in the human body is based on a set of criteria designed to provide descriptive information about each muscle, making it easier to identify and remember them.
The key factors used in naming muscles include:
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Related Experiment Video

Updated: Jan 21, 2026

Isolation, Culture, and Transplantation of Muscle Satellite Cells
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Skeletal muscle cell transplantation: models and methods.

Amber L Mueller1, Robert J Bloch2

  • 1Department of Physiology, University of Maryland School of Medicine, 655 W. Baltimore St., Baltimore, MD, 21201, USA.

Journal of Muscle Research and Cell Motility
|August 9, 2019
PubMed
Summary

Skeletal muscle xenografts are crucial for studying muscle regeneration and diseases like muscular dystrophies. This review details techniques for creating robust human muscle xenografts in rodent models for research and cell therapies.

Keywords:
FSHDMuscular dystrophyMyoblast transfer therapySatellite cellTransplantationXenograft

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Area of Science:

  • Biomedical research
  • Regenerative medicine
  • Cell therapy

Background:

  • Skeletal muscle xenografts are vital tools for investigating muscle repair, regeneration, and muscular dystrophies.
  • They are essential for developing cell therapies for musculoskeletal disorders.

Purpose of the Study:

  • To review techniques for creating robust skeletal muscle xenografts using human-derived cells in rodent hosts.
  • To aid researchers in designing future experiments in muscle xenografting.

Main Methods:

  • Utilizing immunodeficient hosts with pre-established niches for cell engraftment.
  • Employing various cell types including myoblasts, satellite cells, and induced pluripotent stem cells.
  • Implementing local or systemic delivery methods for cell transplantation.

Main Results:

  • Recent advances have improved xenografting of human muscle cells for studying Duchenne and Facioscapulohumeral muscular dystrophy.
  • The review synthesizes a wide array of techniques for experimental design.

Conclusions:

  • Muscle xenografting techniques are advancing, offering powerful models for disease research and therapeutic development.
  • This review provides a comprehensive guide for researchers developing muscle xenografts.