- The trochlear nerve innervates only one muscle, the superior oblique muscle of the eye. (T/F?)
- The superior oblique muscle abducts, depresses and externaly rotates the eye. (T/F?)
- An injury to the trochlear nerve causes horizontal diplopia. (T/F?)
- An injury to the trochlear nucleus will result in symptoms in the eye on the same side. (T/F?)
- An injury to the trochlear nerve, after it exits the mesencephalon, will result in symptoms in the eye on the same side. (T/F?)
- An eye affected with the trochlear nerve palsy is positioned upwards relative to the unaffected eye. (T/F?)
89. The tarts
The cranial nerves passing through the superior orbital fissure in order from top to bottom:
- Lacrimal nerve. (T/F?)
- Frontal nerve. /T/F?)
- Trochlear nerve. (T/F?)
- Superior branch of the oculomotor nerve. (T/F?)
- Nasocilliary nerve. (T/F?)
- Abducens nerve. (T/F?)
- Inferior branch of the oculomotor nerve. (T/F?)
64. Cavernous sinus (Gray-571)
58. Structures that leave or enter the skull through the superior orbital fissure
- Oculomotor nerve. (T/F?)
- Trochlear nerve. (T/F?)
- Frontal nerve. (T/F?)
- Superior and inferior ophthalmic veins. (T/F?)
- Ophthalmic artery. (T/F?)
- Abducens nerve. (T/F?)
19. Cranial nerve nuclei – location
- Trochlear nucleus: Mesencephalon?
- Dorsal cochlear nucleus: Pons?
- Ventral cochlear nucleus: Medulla?
- Oculomotor nucleus: Mesencephalon?
- Facial nucleus: Pons?
- Edinger-Westphal nucleus: Pons?
1. Trochlear nerve
- Is the smallest cranial nerve in terms of the number of axons it contains. (T/F?)
- Has the shortest intracranial length. (T/F?)
- Is the one of two cranial nerves that exit from the dorsal (rear) aspect of the brainstem. (T/F?)
- Innervates superior oblique muscle, on the opposite side (contralateral) from its origin. (T/F?)
- Emerges from the dorsal aspect of the brainstem at the level of the caudal mesencephalon, just below the inferior colliculus, (T/F?)
- Enters the orbit through the superior orbital fissure. (T/F?)
