Neupsy Key

Fig. 18.2 Oblique sagittal T2 MR image through the porus acusticus reveals the characteristic “ball in catcher’s mitt” appearance of the facial nerve (arrow) and the vestibulocochlear nerve. The facial nerve…

Fig. 14.2 Coronal CISS image: cisternal segment of CN III lies in the “oculomotor triangle” defined superiorly by the posterior cerebral artery and inferiorly by the superior cerebellar artery 14.2 Function…

15.2 Function The trochlear nerve has only GSE motor fibers. It innervates the superior oblique muscle, activation of which causes the eye to depress when adducted and to intort (inward…

Related posts: Functional Anatomy of the Cerebellum and Brainstem Cranial Nerve VIII: Vestibulocochlear Infratentorial Vascular Anatomy Cranial Nerve V: Trigeminal Cerebellopontine Angle Structural Anatomy

Fig. 19.2 Oblique sagittal T2W (CSF bright) MRI image through the porus acusticus (opening of the IAC) demonstrates the vestibulocochlear nerve (arrow) inferior and posterior to the facial nerve Fig. 19.3 Oblique…

Fig. 12.1 Coronal CISS image highlights the presence of both olfactory bulbs lying just above the ethmoidal roof (arrow). Note the presence of normal olfactory sulci (arrowhead) Fig. 12.2 Sagittal CISS image…

Of note, the degree of variability in the anatomy of the posterior circulation (point of origin of different arteries, the size of the PICA-AICA complex, degree of asymmetry, etc.) often…

Fig. 22.2 Axial thin CISS MRI image at the level of the medulla shows the cranial root of CN11 (arrows) emerging from the post-olivary sulcus just inferior to CN10. The cranial…