Latorre R, Gil F, Vázquez J M, Moreno F, Mascarello F, Ramirez G
Department of Anatomy and Embryology, University of Murcia, Spain.
J Anat. 1993 Jun;182 ( Pt 3)(Pt 3):313-20.
The canine flexor carpi radialis is subdivided into 2 portions. The radial portion which occupies one third of the cross-section is located caudomedially and is composed only of large type I fibres (43.53 +/- 0.6 microns minimum diameter) in levels close to the insertion. The cubital portion is located craniolaterally and contains fewer and smaller type I fibres (26.10 +/- 0.3 microns minimum diameter). It is hypothesised that the radial portion of the muscle, with its larger slow fibre population, contributes to forelimb postural function. The cubital portion, with its generally fast fibre population (IIA), may be more important in the muscle's recognised function (flexion of the carpal joint during locomotion).
犬桡侧腕屈肌可分为两部分。桡侧部分占据横截面的三分之一，位于尾内侧，在靠近止点处仅由大型I型纤维（最小直径43.53±0.6微米）组成。尺侧部分位于颅外侧，含有较少且较小的I型纤维（最小直径26.10±0.3微米）。据推测，该肌肉的桡侧部分因其较大的慢肌纤维群体，有助于前肢的姿势功能。尺侧部分通常具有快肌纤维群体（IIA），可能在该肌肉公认的功能（运动时腕关节的屈曲）中更为重要。
