Pons Flashcards
contains which CN?
VIII, VII, VI, V
SSA (VIII)
organ of corti to spiral ganglion to cochlear nuclei
cristae amp. and macula to vestibular ganglion to vestibular nuclei
GSA (VII)
from skin of outer ear to spinal trigeminal nucleus
SVA (VII)
from anterior 2/3 taste buds to the nucleus of the solitary tract
GVE (VII)
superior salivatory nucleus provides parasympathetic to both the pterygopalatine ganglion (lacrimal gland) and the submandibular ganglion (submandibular and sublingual glands)
SVE (VII)
facial motor nucleus to the muscles of facial expression
UMN lesion involving the facial muscles
follows corticobulbar tract; spares forehead
LMN lesion inolving facial muscles
facial nerve or nucleus affected, entire half of face is paralyzed (Bell’s)
GSE (VI)
abducens nucleus to lateral rectus muscle
abducens nerve lesion
no ipsilateral lateral gaze
abducens nucleus lesion
no ipsilateral lateral gaze; no conjugate contralateral medial gaze
medial longitudinal fasciculus
connects 6th and 3rd nuclei; lesion will lead to internuclear opthalmoplegia
GSA (V)
from skin of face and anterior scalp, mouth/nasal mucus membranes. dura to the main sensory nucleus (like DCML), and the spinal trigeminal nucleus (like STT)
OR
from stretch receptors of muscles of mastication to the mesencephalic nucleus to the motor nucleus of V (jaw jerk reflex)
SVE (V)
motor nucleus of V to muscles of mastication, tensor tympani, tensor veli palatini, mylohyoid, and anterior belly of the digastric
trigeminothalamics
come from the spinothalamics via spinal nucleus V (carries pain and temp, blink)
come from medial leminiscus via main sensory nucleus (carries general tactile)
to cerebellum via the mesencephalic nucleus (carries joint position)
