Morphologic and histochemical characteristics of laryngeal muscle.
Morphologic and histochemical characteristics of laryngeal muscle.
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喉肌的形态和组织化学特征。
DOI：
10.1001/archotol.1982.00790580056018
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发表时间：
1982
影响因子：
--
通讯作者：
Bernard M. Patten
中科院分区：
文献类型：
--
作者：
David B. Rosenfield;Robert H. Miller;Roy B. Sessions;Bernard M. Patten
喉肌（LM）是高度专门化的发声和括约肌活动。我们询问这种专业化是否体现在LM的结构上。我们使用组织化学技术检查了3名突然死亡且无喉部疾病证据的男性的5个LM的结构。与非喉部骨骼肌相比，我们的标本显示出中度纤维化，纤维变圆，嗜碱性细胞，以及显示为线粒体的粗糙的红色纤维。一般来说，LM纤维比肢体骨骼肌更小，在大小上有更多的可变性，并且含有更大比例的组织化学1型纤维。这些差异表明，来自肢体骨骼肌研究的运动控制理论可能不适用于LM。
Laryngeal muscle (LM) is highly specialized for phonation and sphincter activity. We queried whether this specialization is reflected in the structure of LM. We examined, using histochemical techniques, the structure of five LM from three men who died suddenly and who had no evidence of laryngeal disease. Compared with nonlaryngeal skeletal muscle, our specimens demonstrated moderate fibrosis, rounding of fibers, basophilia, and ragged red fibers that were shown to be mitochondria. In general, LM fibers are smaller, have more variability in size, and contain a greater percentage of histochemically type 1 fibers than limb skeletal muscles. These differences suggest that theories of motor control derived from studies of limb skeletal muscles may not apply to LM.