Ontogenetic development of the shoulder joint muscles in frogs (Amphibia: Anura) assessed by digital dissection with implications for interspecific muscle homologies and nomenclature
Ontogenetic development of the shoulder joint muscles in frogs (Amphibia: Anura) assessed by digital dissection with implications for interspecific muscle homologies and nomenclature
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DOI：
10.1007/s00435-020-00510-4
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发表时间：
2021-02-16
期刊：
影响因子：
1
通讯作者：
Haas, Alexander
中科院分区：
文献类型：
--
作者：
Engelkes, Karolin;Panpeng, Supak;Haas, Alexander
先前的肌肉学研究表明，青蛙和蟾蜍（两栖动物：无尾目）肩关节肌肉的识别和命名不一致。通过评估代表古代谱系和两个主要新蛙类的选定无尾目物种的个体发育、神经支配和成体形态，揭示并解决了这些不一致之处。为此，对通过组织学连续切片、外显式切片和对比增强微型计算机断层扫描获得的体积进行数字解剖，并得出三维重建。定义了穿过肩关节的肌肉单位，描述了它们的个体发育，建立了它们跨物种的同源性，并提出了一致的命名法。毫米。肘肌、肩胛背肌、背阔肌和肩胛肱肌群在个体发育上源自所有四足动物中存在的背侧前肌群。腹侧前肌群产生毫米。锁肱肌、肱上肌、喙上肌、喙桡肌、喙肩胛下肌、喙肱肌和胸肌。结果表明，mm。肘肌、肩胛背肌、背阔肌、喙桡肌以及胸骨部和腹肌。胸大肌在之前的研究中一直得到认可和表示，而肌肉单位的名称通常表示为 m。喙肱长肌和作为 m 的一部分。三角肌对于这些肌肉的个体发生起源存在误导。毫米。肩胛肱深肌前部和后部虽然存在，但在一些研究中被忽视。毫米。锁肱肌、喙肱肌和喙肱肌在某些物种中以两个部分或部分存在，这些部分以前并不总是被正确识别和分配。
Previous myological studies show inconsistencies with regard to the identification and naming of the shoulder joint muscles in frogs and toads (Amphibia: Anura). Those inconsistencies were revealed and resolved by assessing the ontogenetic development, innervation, and adult morphology of selected anuran species representing ancient lineages and two major neobatrachian groups. To do so, digital dissections of volumes acquired by histological serial sectioning, episcopic microtomy, and contrast-enhanced micro-computed tomography scanning were performed and three-dimensional reconstructions were derived. Muscle units crossing the shoulder joint were defined, their ontogenetic development was described, their homology across species was established, and a consistent nomenclature was suggested. The mm. anconaeus, dorsalis scapulae, latissimus dorsi, and the group of scapulohumeralis muscles were ontogenetically derived from the dorsal pre-muscle mass present in all tetrapods. The ventral pre-muscle mass gave rise to the mm. cleidohumeralis, episternohumeralis, supracoracoideus, coracoradialis, subcoracoscapularis, coracobrachialis, and pectoralis. The results indicate that the mm. anconaeus, dorsalis scapulae, latissimus dorsi, coracoradialis, and the portionis sternalis and abdominalis of the m. pectoralis have consistently been recognized and denoted in previous studies, whereas the names for the muscle units commonly denoted as m. coraco-brachialis longus and as parts of the m. deltoideus are misleading with regard to the ontogenetic origin of these muscles. The mm. scapulohumeralis profundus anterior and posterior, although present, have been overlooked in some studies. The mm. cleidohumeralis, supracoracoideus, and coracobrachialis are present with two parts or portions in some species, these portions have previously not always been recognized and assigned correctly.