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関連する概念動画

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The muscles of the forearm that move the wrist, hand, and digits are numerous and diverse. They can be classified into two groups based on their location and function — the anterior and posterior compartment muscles.
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The upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...
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Evolutionary psychology explores the origins of human behavior and mental processes by framing them within the context of natural selection, a theory famously propounded by Charles Darwin. This field asserts that many behaviors common across human societies — ranging from instinctive fear reactions to complex social interactions — arose as evolutionary adaptations. These adaptations enhanced the survival and reproductive success of our ancestors, thereby becoming embedded in the...
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John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
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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...
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Behavioral Assessment of Manual Dexterity in Non-Human Primates
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人間の進化. 人間の進化. コメントへの返信 "Australopithecus africanusのヒトのような手を使う"に関するコメント

Matthew M Skinner1, Nicholas B Stephens2, Zewdi J Tsegai2

  • 1School of Anthropology and Conservation, University of Kent, Canterbury CT2 7NR, UK. Department of Anthropology, University College London London, WC1H 0BW, UK. Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany. Evolutionary Studies Institute and Centre for Excellence in PalaeoSciences, University of the Witwatersrand, Private Bag 3, Wits 2050, South Africa. m.skinner@kent.ac.uk t.l.kivell@kent.ac.uk.

Science (New York, N.Y.)
|June 6, 2015
PubMed
まとめ

この研究は,Australopithecus africanusの実際の手を使う行動を示し,単純化された機能的適応の理解に関する以前の主張に異議を唱える. 私たちの発見は,確固たる証拠に基づいた,潜在的な行動だけでなく,現実世界の行動を支持しています.

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科学分野:

  • 古人類学は,古人類学である.
  • 霊長類の機能的形態学
  • 骨格のバイオメカニクス

背景:

  • Australopithecus africanusの手の形状の機能的解釈については議論がある.
  • 以前の研究では,実際の行動ではなく,潜在的,手を使う行動を示唆していました.

研究 の 目的:

  • 古人類学における骨の機能的適応の簡素化された理解の主張に対処するために.
  • Australopithecus africanus.の実際の,人間のような手を使うことの証拠を提示する.

主な方法:

  • 方法論的アプローチに基づく機能的解釈の分析.
  • 多様なサンプルを用いた比較分析.
  • 骨の適応に関する以前の実験データの統合.

主要な成果:

  • この研究の結果は,Australopithecus africanusの実際の行動パターンを示しています.
  • 機能的解釈は,採用された方法論と比較データによって強く支持されています.
  • 提示された証拠は,新しさの欠如と簡略化された理解の主張を否定しています.

結論:

  • この研究は,Australopithecus africanus.の特定の手を使う行動に関する強力な証拠を提供します.
  • 骨格の証拠の機能的解釈は,十分に支持され,科学的に厳格です.
  • この研究は,ヒトの機能的適応のより微妙な理解に貢献しています.