Normal Anatomy and Anomalies of the Rectus Extraocular Muscles in Human: A Review of the Recent Data and Findings

Figure 4

Superior (sr) and inferior (ir) rectus muscles connected to each other by muscular bands (mb). Such muscular bands, taking origin (marked by black arrowhead) from the common tendinous ring and attached to rectus muscles are referred to as accessory rectus muscles. The characteristic feature of accessory rectus muscles is that they are located laterally to the optic nerve (on). Sagittal section of the specimen taken from the right orbit. id: inferior division of the oculomotor nerve; mr: medial rectus muscle. This figure is a modification of the drawing taken from Haładaj et al. [43] under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium.