The<unk>  of the brain (or foramen of Magendie) is an opening in the hollow nerve tube, connecting the fourth ventricle of the brain with the subarachnoid space.
The<unk> , along with the two lateral<unk> s (foramina of Luschka), one on the left and one on the right, are the three primary routes for cerebrospinal fluid to escape into the cisterna magna.
Median aperture
Eye circles
Fundal height
Cook's distance
Olfactory foramina
Semicircular canal
Breslow's depth
Posterior chamber