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Related Concept Videos

Muscles that Move the Head01:19

Muscles that Move the Head

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The muscles that move the head are a dynamic and complex group of structures that work together to facilitate a wide range of head movements, including rotation, flexion, extension, and lateral bending.
The bilateral sternocleidomastoid, or SCM, and the suprahyoid and infrahyoid muscles are significant head flexors. The SCM muscles originate at the sternum and clavicle and attach to the mastoid process of the temporal bone. The SCM contracts bilaterally to bend the head forward, whereas...
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The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
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The craniofacial muscles are a collection of approximately 20 thin skeletal muscles situated beneath the skin of the face and scalp. These muscles, primarily responsible for the vast array of human facial expressions, originate from the bones or fibrous structures of the skull and extend outwards to connect with the skin. While most skeletal muscles in the body are enveloped in thick fascia, facial muscles generally have a more delicate fascial covering, with the buccinator muscle being a...
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De novo myogenesis, or the formation of muscle fibers, begins during the early embryonic stages. The skeletal muscle is formed from somites– blocks of embryonic cell layers. The somites are further divided into dermatomes, myotomes, sclerotomes, and syndetomes. Among these, the myotomes give rise to muscle fibers.
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Skeletal muscles, the key players in our body's movement, can be classified into two groups based on their location and function: axial muscles and appendicular muscles. These classifications reflect the primary roles the muscles play in the body's structure and movement.
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The muscular system is essential to the body's overall structure and function, playing a crucial role in movement, stability, and internal processes. It consists of three distinct types of muscle tissue: the skeletal, the smooth, and the cardiac muscles.
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Related Experiment Video

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Isolation and Characterization of Satellite Cells from Rat Head Branchiomeric Muscles
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Isolation and Characterization of Satellite Cells from Rat Head Branchiomeric Muscles

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Head muscle development.

Eldad Tzahor1

  • 1Department of Biological Regulation, Weizmann Institute of Science, Rehovot, 76100, Israel, eldad.tzahor@weizmann.ac.il.

Results and Problems in Cell Differentiation
|October 27, 2014
PubMed
Summary
This summary is machine-generated.

Head muscle development differs from trunk muscles, originating from distinct embryonic tissues. Pharyngeal mesoderm contributes to head muscles and the heart, revealing shared genetic programs and evolutionary links.

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Area of Science:

  • Developmental biology
  • Evolutionary biology
  • Genetics

Background:

  • Craniofacial muscle development follows distinct embryonic pathways compared to trunk muscles.
  • Pharyngeal mesoderm is a key progenitor population for certain head muscles and the heart.

Purpose of the Study:

  • To summarize research on the origins, signaling, genetics, and evolution of head musculature.
  • To highlight the heterogeneous nature of craniofacial muscle development.

Main Methods:

  • Review of developmental and lineage studies in vertebrates and invertebrates.
  • Analysis of genetic programs regulating muscle specification.
  • Examination of evolutionary origins from early chordates.

Main Results:

  • Head and trunk muscle development utilize distinct mesodermal populations and genetic programs.
  • Pharyngeal mesoderm progenitors contribute to both craniofacial muscles and the heart.
  • Shared genetic control between pharyngeal muscles and the heart explains linked cardiac and craniofacial birth defects.

Conclusions:

  • The head musculature is evolutionarily ancient, with an ancestral pharyngeal mesoderm lineage giving rise to both heart and craniofacial structures.
  • Understanding these developmental links is crucial for comprehending congenital defects.