Unit of Human Anatomy and Embryology, University of Barcelona, C/Casanova 143, 08036 Barcelona, Spain.
Animal Postcranial Evolution (APE) Lab, Skeletal Biology Research Centre, School of Anthropology and Conservation, University of Kent, Canterbury CT2 7NR, UK.
Biomed Res Int. 2018 Jan 21;2018:9404508. doi: 10.1155/2018/9404508. eCollection 2018.
We have analyzed anatomic variations in the pectoralis major and pectoralis minor muscles of common chimpanzees and bonobos and compared them to anatomic variations in these muscles in humans . We have macroscopically dissected these muscles in six adult , five of ages ranging from fetus to adult, and five adult . Although are thought to lack a separate pectoralis abdominis muscle, we have identified this muscle in three of the ; none of the , however, had this muscle. We have also found deep supernumerary fascicles in the pectoralis major of two and all five . In all six , the pectoralis minor was inserted at the supraspinatus tendon, while, in and , it was inserted at the coracoid process of the scapula. Some of the anatomic features and variations of these muscles in common chimpanzees and bonobos are similar to those found in humans, therefore enhancing our knowledge of primate comparative anatomy and evolution and also shedding light on several clinical issues.
我们分析了普通黑猩猩和倭黑猩猩胸大肌和胸小肌的解剖变异，并将其与人类这些肌肉的解剖变异进行了比较。我们对 6 名成年个体（其中 5 名年龄从胎儿到成年不等，5 名成年个体）的这些肌肉进行了宏观解剖。虽然被认为没有独立的腹外斜肌，但我们在其中 3 只中发现了这种肌肉；然而，没有一只具有这种肌肉。我们还在两只和所有 5 只中发现了胸大肌深层多余的束。在所有 6 只中，胸小肌都插入到了冈上肌腱，而在和中，它插入到了肩胛骨的喙突。普通黑猩猩和倭黑猩猩的这些肌肉的一些解剖特征和变异与人类相似，因此增强了我们对灵长类比较解剖学和进化的认识，也为一些临床问题提供了线索。
