RT Journal Article T1 Anatomic relationships of the orbital muscle of Müller in human fetuses A1 Rodríguez Vázquez, José Francisco A1 Mérida Velasco, José Ramón A1 Arráez Aybar, Luis Alfonso A1 Jiménez Collado, Juan AB A study was carried out in twenty human fetuses on the relationships of the orbital muscle of Müller. This muscle forms a lamina of smooth muscle fibres that cover the inferior orbital fissure. The latter is very wide during the fetal period because ossification of the bones that delimit this region is still incomplete. Some fibres of the orbital muscle extend along the superior orbital fissure under the inferior ophthalmic vein and the lower wall or floor of the cavernous sinus. This association suggests a possible influence on autonomically mediated vascular dynamics. PB Springer SN 0930-1038 YR 1999 FD 1999-01 LK https://hdl.handle.net/20.500.14352/122531 UL https://hdl.handle.net/20.500.14352/122531 LA eng NO Rodríguez-Vázquez, J.F., Mérida-Velasco, J.R., Arráez-Aybar, L.A. et al. Anatomic relationships of the orbital muscle of Müller in human fetuses. Surg Radiol Anat 20, 341–344 (1999). https://doi.org/10.1007/s00276-998-0341-6 NO Universidad Complutense de Madrid NO DGES DS Docta Complutense RD 26 feb 2026