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Related to foramen magnum: jugular foramen
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In children with symptomatic Chiari I malformation, even though bulk flow or velocity is often normal, there is marked heterogeneity of flow at the foramen magnum.
The far lateral approach for ventrally placed foramen magnum and upper cervical spine tumours.
A complete discussion of the foramen magnum and the structures surrounding it is beyond the scope of this article.
The proatlantal arteries arise from the common, external, or internal carotid arteries at the C2 to C4 levels, remaining within the foramen magnum before joining the basilar system.
As those changes, we used the key features that are derived in humans, by comparison with our ancestors: the shift of the foramen magnum associated with the transition to bipedal posture, the retraction of the face, the flexion of the cranial base, and, finally, the expansion of the braincase.
Autonomic dysfunction secondary to foramen magnum compression may also have contributed to the haemodynamic instability.
It slopes backward and downward from the dorsum sellae to the foramen magnum in the occipital bone.
Junior Advanced Super (7and 8) (9 and 10) (11 and 12) skin cranium ganglion skeleton hard palate bronchiole orbit soft palate cementum pinna suture malleolus socket lymph node zygomatic globe dendrite lacrimal nasal space hormone ossicle ear canal sclera ethmoid brain stem stirrup epigastric spinal cord olfactory sacroiliac vertebra vomer inguinal tonsil uvula mesentery spleen epiglottis trigeminal root cricoid ischium lymph pharnyx lymphocyte vocal cord pectoral corpus callosum nervous system intercostal photoreceptor frontal lobe acetabulum pterygoid cornea vena cava maxillary sinus anvil subclavian foramen magnum
ganglion inguinal bronchiole mesentery cementum trigeminal malleolus ischium zygomatic lymphocyte lacrimal corpus callosum ossicle photoreceptor ethmoid pterygoid epigastric maxillary sinus sacroiliac foramen magnum
possibly lead to transtentorial and foramen magnum herniation.
The drainage pattern, which occurs in more pronounced form among modern humans, consists of enlarged sinus grooves running laterally down the temporal bone, as well as marks made by a network of veins around the foramen magnum, the large opening in the skull through which the spinal cord passes.