The myodural bridge in the common rock pigeon (Columbia livia): Morphology and possible physiological implications
The myodural bridge in the common rock pigeon (Columbia livia): Morphology and possible physiological implications
复制标题
普通岩鸽（哥伦比亚利维亚）的肌硬膜桥：形态学和可能的生理意义。
DOI：
10.1002/jmor.20890
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发表时间：
2018-10-01
影响因子：
1.5
通讯作者：
Sui, Hong-Jin
中科院分区：
文献类型：
--
作者：
Okoye, Chukwuemeka Samuel;Zheng, Nan;Sui, Hong-Jin
在人体解剖学中，将肌肉连接到颈椎硬脊膜的致密结缔组织被称为肌硬膜桥，它一直是解剖学家和临床医生感兴趣的研究对象。肌硬膜桥最初是在人类中发现的，在其他哺乳动物和爬行类羊膜动物中也有观察到。我们研究了一种鸟类（即家鸽Columba livia）中肌硬膜桥的存在情况，以加深对肌硬膜桥结构和功能的理解。对7个标本进行了大体解剖，对8个标本的枕下区域进行了组织学分析。头后小直肌连接枕骨骨膜延伸部分，并通过数条致密结缔组织索插入颈椎脊髓硬脊膜的背侧。肌硬膜桥主要由I型胶原纤维组成，这表明肌硬膜桥能够将头后小直肌收缩产生的强大张力传递给硬脊膜。对硬脊膜的牵拉可能会影响脊柱蛛网膜下腔中脑脊液的循环。
The dense connective tissue that connects muscles to the cervical spinal dura mater is known as the myodural bridge in human anatomy and has been a subject of interest to anatomists and clinicians. The myodural bridge was originally discovered in humans, and also has been observed in other mammals and in reptilian sauropsids. We investigated the existence of the myodural bridge in a bird, that is, the Common Rock Pigeon Columba livia, to expand the understanding of the structure and function of the myodural bridge. Gross anatomical dissection of seven specimens and histological analyses of the suboccipital region of eight specimens were performed. The rectus capitis dorsalis minor muscle joins occipital periosteal extensions and inserts with several dense connective tissue cords on the dorsal side of the dura mater of the cervical spinal cord. The myodural bridge consists primarily of collagen Type I fibres, suggesting that the myodural bridge can transmit strong tensional forces generated by the contraction of M. rectus capitis dorsalis minor to the dura mater. The pull on the dura mater may affect the circulation of the cerebrospinal fluid in the subarachnoid space of the spine.