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Related Concept Videos

Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

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...
Bones of the Upper Limb: Ulna01:15

Bones of the Upper Limb: Ulna

The ulna and radius are parallel bones of the antebrachium or the forearm. The ulna lies medially and consists of a bony tip called the olecranon process at its proximal end. This hook-like projection articulates with the olecranon fossa of the humerus and forms the "hinged" ulnohumeral part of the elbow joint. This joint facilitates forearm extension and flexion while preventing its hyperextension. Similarly, the coronoid process, another bony projection on the proximal/anterior side of the...
Gross Anatomy of Skeletal Muscles01:12

Gross Anatomy of Skeletal Muscles

The connective tissues play a significant role in arranging the muscle fibers into a hierarchical structure that forms a complete muscle. Consider a muscle like the bicep brachii, commonly called the bicep. This muscle comprises thousands of muscle fibers enclosed by a protective layer of connective tissue called the endomysium. The endomysium is primarily composed of reticular fibers, a type of thin collagen fiber. It allows the exchange of nutrients and waste products at the fiber level,...

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Related Experiment Video

Updated: Jun 19, 2026

Levator Auris Longus Preparation for Examination of Mammalian Neuromuscular Transmission Under Voltage Clamp Conditions
10:45

Levator Auris Longus Preparation for Examination of Mammalian Neuromuscular Transmission Under Voltage Clamp Conditions

Published on: May 5, 2018

Levator claviculae muscle: a case report.

Konstantinos Natsis1, Stylianos Apostolidis, Elisavet Nikolaidou

  • 1Department of Anatomy, Medical School, Aristotle University of Thessaloniki P.O. Box: 300, 54124 Thessaloniki Greece. natsis@med.auth.gr

Cases Journal
|October 16, 2009
PubMed
Summary

A rare levator claviculae muscle was found in a cadaver, offering insights into its anatomy and potential clinical significance. This accessory muscle, present in 1-3% of people, has unique embryologic origins.

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Combined In Vivo Electroporation and Short-Term Reinnervation of the Cranial Levator Auris Longus Skeletal Muscle
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Combined In Vivo Electroporation and Short-Term Reinnervation of the Cranial Levator Auris Longus Skeletal Muscle

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Related Experiment Videos

Last Updated: Jun 19, 2026

Levator Auris Longus Preparation for Examination of Mammalian Neuromuscular Transmission Under Voltage Clamp Conditions
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Published on: May 5, 2018

Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer
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Combined In Vivo Electroporation and Short-Term Reinnervation of the Cranial Levator Auris Longus Skeletal Muscle
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Combined In Vivo Electroporation and Short-Term Reinnervation of the Cranial Levator Auris Longus Skeletal Muscle

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Area of Science:

  • Anatomy
  • Human Morphology

Background:

  • Accessory muscles of the shoulder girdle are infrequently documented.
  • Understanding anatomical variations is crucial for clinical practice.

Observation:

  • A levator claviculae muscle was identified in a 65-year-old male cadaver.
  • Detailed topographical and morphological characteristics of the muscle were documented.

Findings:

  • The levator claviculae muscle is a rare anatomical variant, occurring in 1-3% of the population.
  • The study describes the muscle's topography, morphology, and embryologic origin.

Implications:

  • This finding contributes to the understanding of human anatomical variations.
  • Knowledge of this accessory muscle is important for diagnosing and treating shoulder and neck conditions.