Cranial Nerves
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27 terms
Terms | Definitions |
|---|---|
 Mnemonic for cranial nerve function (sensory, motor, or both)? | Some say money matters; some say men. My brother says big brains matter most. |
| Mnemonic for skull foramina that cranial nerves 1-12 use as exit points? | Carribean oceans smell so sweet right off small islands. In Jamaica, Jamaicans joke heartily. |
| CN III: two motor components? | somatic motor and visceral motor |
| CN III: origin(s)? | 1) oculomotor nucleus in rostral midbrain 2) Edinger-Westphal nucleus, also in rostral midbrain |
| CN III: exit point from the skull? | superior orbital fissure |
| What does the Edinger-Westphal nucleus send out projections for? | preganglionic efferent fibers to the ciliary ganglion |
| Which muscles does the superior ramus of CN III supply? | superior rectus and levator palpebrae superioris |
| What does the inferior ramus of CN III innervate? | visceral fibers supply the ciliary ganglion, which sends projections to the sphincter pupillae and ciliary muscles; somatic fibers supply the inferior rectus, medial rectus, and inferior oblique muscles |
| CN V: nuclei? | 1) mesencephalic nucleus in midbrain 2) main sensory nucleus in dorsal pons 3) spinal nucleus of V 4) motor nucleus in midbrain/pons |
| CN V: exit point from the skull? | - V1 exits through the superior orbital fissure - V2 exits through the foramen rotundum - V3 exits through the foramen ovale |
| Resting place of the trigeminal ganglion? | cavum trigeminale ("Meckel's cave") |
| Just before entering the orbit, the ophthalmic nerve _________. | branches into 3 nerves: the Frontal nerve, the Lacrimal nerve, and the Nasociliary nerve. |
| Largest branch of ophthalmic nerve? | frontal branch |
| passes between the roof of the orbit and the LPS muscle | frontal nerve |
| The frontal nerve divides into a ________ ________ branch and a _______ _______ branch. | medial Supratrochlear, lateral Supraorbital |
| Smallest branch of the ophthalmic nerve? | Lacrimal branch |
| The Lacrimal nerve receives communication from the _____________ nerve, a branch of the __________ nerve, which is in turn a branch of the __________ nerve. | Zygomaticotemporal, Zygomatic, Maxillary |
| The nasociliary nerve branches into _______ . | 1) anterior ethmoidal nerve 2) posterior ethmoidal nerve |
| The anterior ethmoidal nerve branches into _______. | 1) communicating branch to the ciliary ganglion 2) long ciliary nerves 3) infratrochlear nerve |
| passes through the inferior orbital fissure as the Infraorbital nerve | the maxillary nerve |
| The maxillary nerve passes through the ______ in the orbital floor and emerges from it to appear in the face through the _________. | infraorbital canal, infraorbital foramen |
| The maxillary nerve branches in the ________, in the _______, and also in the _________. | cranial cavity, Pterygopalatine fossa, infraorbital canal |
| In the cranial cavity, the maxillary nerve gives rise to the ______. | Meningeal branch |
| In the Pterygopalatine fossa, the maxillary nerve gives rise to the: | 1) Ganglionic branch 2) Zygomatic branch 3) Posterior Superior Alveolar branch |
| In the infraorbital canal, the maxillary nerve gives rise to the: | 1) Middle Superior Alveolar branch 2) Anterior Superior Alveolar branch |
| In the face, the infraorbital nerve branches to form the: | 1) Palpebral branch 2) Nasal branch 3) Superolabial branch |
| The ganglionic branches of the maxillary nerve mostly travel straight through the _________ into the ________ nerves. | Pterygopalatine ganglion, palatine |
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