Lennartsson B
J Anat. 1980 Mar;130(Pt 2):279-88.
The frequency and distribution of muscle spindles in the muscles of mastication of the rat have been studied. The average number of spindles found was 110 in the masseter, 75 in the temporalis and 25 in the medial pterygoid muscle, the spindles being predominantly in the medial parts of these muscles. No muscle spindles were found in the lateral pterygoid or posterior digastric muscle, and only isolated spindles were found in a few of the anterior digastric muscles. These differences between the jaw-closing and the jaw-opening muscles are intriguing and ask for further investigation of the role of the muscle spindles in mastication.
对大鼠咀嚼肌中肌梭的频率和分布进行了研究。发现咬肌中肌梭的平均数量为110个，颞肌中为75个，翼内肌中为25个，这些肌梭主要位于这些肌肉的内侧部分。在翼外肌或二腹肌后腹未发现肌梭，仅在少数二腹肌前腹发现了孤立的肌梭。闭口肌和开口肌之间的这些差异很有趣，需要进一步研究肌梭在咀嚼中的作用。
