located_in located in conduit for occipital bone medulla oblongata foramen magnum AAO:0010826 Design pattern notes: check whether this fits the foramen design pattern EMAPA:37868 FMA:75306 Foramen in the occipital region of neurocranium to allow passage of spinal cord.[TAO] GAID:228 In anatomy, in the occipital bone, the foramen magnum is one of the several oval or circular apertures in the base of the skull, through which the medulla oblongata (an extension of the spinal cord) enters and exits the skull vault. Apart from the transmission of the medulla oblongata and its membranes, the foramen magnum transmits the Spinal Accessory nerve, vertebral arteries, the anterior and posterior spinal arteries, the membrana tectoria and alar ligaments. [WP,unvetted]. MESH:D005539 NCIT:C12495 OpenCyc:Mx4rwOm-FpwpEbGdrcN5Y29ycA TAO:0002045 UBERON:0003687 UMLS:C0016519 ZFA:0005387 uberon foramen of skull