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Related Concept Videos

Muscles for Facial Expressions01:14

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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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Charles Darwin proposed that facial expressions are an evolutionary adaptation for communication. He argued that these expressions are not influenced by culture but are universal across species. For example, a snarling expression with exposed teeth signals a threat in many animals, including humans. Darwin also suggested that displaying an emotion can intensify the feeling. Smiling, for example, could enhance one's sense of happiness. This idea laid the foundation for understanding the role...
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Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
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Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which...
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The pre-procedure steps of handwashing include removing jewelry and rolling up sleeves. However, many organizations allow staff to wear wedding rings.
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Related Experiment Video

Updated: Feb 4, 2026

Visualizing Scar Development Using SCAD Assay - An Ex-situ Skin Scarring Assay
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Facial Scar Improvement Procedures.

Christopher Ian Newberry1, J Regan Thomas2, Eric W Cerrati1

  • 1Department of Otolaryngology-Head and Neck Surgery, University of Utah Hospital, Salt Lake City, Utah.

Facial Plastic Surgery : FPS
|October 9, 2018
PubMed
Summary
This summary is machine-generated.

Scar revision addresses unfavorable scarring from injuries or surgery. Cosmetic surgeons use surgical and minimally invasive techniques to improve scar appearance and function.

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Area of Science:

  • Dermatology and Plastic Surgery

Background:

  • Scars are a natural outcome of skin healing after injury or surgery.
  • Ideal scars are minimally visible, matching surrounding tissue in color and texture.
  • Unfavorable scarring (e.g., hypertrophic, atrophic, dyspigmented) can cause aesthetic and functional issues.

Purpose of the Study:

  • To review scar revision techniques for improving aesthetic and functional outcomes.
  • To highlight the importance of understanding various scar characteristics.

Main Methods:

  • Discussion of both minimally invasive and surgical scar revision procedures.
  • Emphasis on surgeon's knowledge of different techniques.

Main Results:

  • Scar revision aims to correct aesthetic concerns and functional limitations.
  • Techniques are selected based on scar type and patient needs.

Conclusions:

  • Effective scar revision requires a comprehensive understanding of scar pathology.
  • Cosmetic surgeons must be proficient in diverse techniques to achieve optimal results.