Cranial Nerves Flashcards
(116 cards)
Purely motor nerves
4,6,11,12
Purely sensory nerves
1,2,8,V1, V2
Mix of sensory and motor
V3
Mix of sensory, motor, and parasympathetic
3,7,9,10
How are cranial nerves numbered?
From rostral to caudal
Most cranial nerves are associated with ____
The brainstem
Parts of the brainstem (rostral to caudal)
Midbrain, pons, medulla
Cranial nerve somatomotor nuclei
Brainstem
Equivalent to ventral horn of spinal cord
Innervate skeletal muscles of face and neck
Sensory ganglia of spinal nerves path
Peripheral process to sensory ganglia to central process to cranial nerve sensory nucleus
Peipheral process of cranial nerve sensory nerves associated iwht
a receptor
Central process of cranial nerve terminates in a
Cranial nerve sensory nucleus (equivalent to dorsal horn)
Preganglionic parasympathetic fibers of cranial nerves travel
With the cranial nerve in which it was associated and synapse in parasympathetic ganglion
Postganglionic parasympathetic fibers of cranial nerves travel
Hitch a ride on other nerves (typically 5)
Preganglionic sympathetic fibers of cranial originate
Lateral horn of spinal cord
Postganglionic sympathetic fibers of cranial originate from
Superior cervical ganglion
How can post-gang sym reach target?
On their own Carotid plexus (on internal and external carotids) Follow internal carotids to skull and hitch a ride with CN5
Ganglia of the head and associated nerve
Ciliary (2)
Pterygopalatine (7)
Submandibular (7)
Otic (9)
Branches of trigeminal nerve supplying the face from superior to inferior
Ophthalmic
Maxillary
Mandibular
CN 5
Trigeminal nerve
Where are sensory trigeminal nerve cell bodies found
Trigeminal ganglion
Trigeminal somatosensory fibers
Peripheral processes
Ophtalmic (V1)
Maxillary (V2)
Mandibular (V3)
Trigeminal central processes terminate in
Spinal trigeminal nucleus
Cell bodies of trigeminal motor fibers innervating skeletal muscles
Trigeminal motor nucleus (ventral horn)
How does ophthalmic division leave the cranial cavity
Superior orbital fissure