Cranial Nerves Flashcards
Where does the Oculomotor nerve (III) leave the brainstem?
The midbrain, interpeduncular fossa (ventral)
Where does the trochlear nerve (IV) leave the brainstem?
Midbrain, interpeduncular fossa (DORSAL)
Where does the Abducens nerve (VI) leave the brainstem?
Pons, lower border of pons - pontocerebellar junction.
Where does the oculomotor nerve (III) pierce the dura mater?
At the superior orbital fissure
Where does the abducens nerve (VI) pierce the dura mater?
Durellos canal
Where does the oculomotor nerve (III) leave the skull?
Superior orbital fissure
Where does the trochelar nerve (IV) leave the skull?
Superior orbital fissure
Where does the abducens nerve (VI) leave the skull?
Superior orbital fisure
Where does the trigeminal nerve (V) leave the brainstem?
It leaves the lateral part of the pons, the pontopeduncular junction.
Where does the trigeminal nerve pierce the dura mater?
Meckel’s cave
Which parts does the trigeminal nerve (V) divide into?
Ophthalmic division (V1) Maxillary division (V2) Mandibular division (V3)
Where does the ophthalmic division (V1) leave the skull?
Superior orbital fissure
Where does the maxillary division (V2) leave the skull?
It enters the pterygopalatine fossa through the forarmen rotondum
Where does the mandibular division (V3) leave the skull?
It passes though the forarmen ovale to the inferior surface of the base of the skull into the infraperitoneal fossa.
Where does the facial nerve (VII) leave the brainstem?
It leaves the medulla oblongata at the cerebellopontine angle.
Where does the vestibulocochlear nerve (VIII) leave the brainstem?
It leaves the medulla oblongata at the cerebellopontine angle.
Where does the facial nerve (VII) pierce the dura mater?
Internal aucustic meatus
Where does the vestibulocochlear nerve pierce the dura mater?
Internal aucustic meatus
Where does the facial nerve (VII) leave the skull?
Stylomastoid forarmen
Where does the vestibulocochlear nerve (VIII) leave the skull?
It does not leave the skull (?)
Where does the glossopharyngeal nerve (IX) leave the brainstem?
It emerges dorsal to the olive in the lateral parolivery sulcus.
Where does the vagus nerve (X) leave the brainstem?
It emerges dorsal to the olive, in the lateral parolivery sulcus
Where does the accessory nerve (XI) leave the brainstem?
?
Where does the glossopharyngeal nerve (IX) pierce the dura mater?
Jugular forarmen
Where does the vagus nerve (X) pierce the dura mater?
Jugular forarmen
Where does the accessory nerve (XI) pierce the dura mater?
Jugular forarmen
Where does the glossopharyngeal nerve (IX) leave the skull?
Jugular forarmen
Where does the vagus nerve (X) leave the skull?
Jugular forarmen
Where does the accessory nerve (XI) leave the skull?
Jugular forarmen
Where does the hypoglossal nerve (XII) leave the brainstem?
From the medulla oblongata in the medial parolivery sulcus
Which nerve(s) leaves through the cribiform plate?
Olfactory nerve
Which nerve(s) leaves through the optic canal?
Optic nerve
Which nerve(s) leaves through the superior orbital fissure?
Oculomotor nerve (III), trochlear nerve (IV), abducens nerve (VI) and ophthalmic nerve (V1)
Which nerve(s) leaves through the forarmen rotundum?
Maxillary nerve (V2)
Which nerve(s) leaves through the forarmen ovale?
Mandibular nerve (V3)
Which nerve(s) leaves through the internal aucustic meatus?
Facial nerve (VII) and vestibulocochlear nerve (VIII)
Which nerve(s) leaves through the jugular forarmen?
Glossopharyngeal nerve (IX), vagus nerve (X) and accessory nerve (XI)
Which nerve(s) leaves through the hypoglossal canal?
Hypoglossal nerve (XII)
