Section 5 Notes Flashcards
Projectiosn of the vestibular nucleoi/area in the medulla
- to other nuclei for vestibular reflexes (e.g. medial longitudinal fasciculus for vestibular-ocular and tonic neck reflexes, vestibulospinal tracts for posture and support),
- to and from the cerebellum via the inferior cerebellar peduncle
projectiosn of the salvitaory nuceli in the medulla
- otic ganglion (partoid via 9)
- submandibualr ganglion (sublingual and submaxillary via 7)
- pteryogoaplatine ganglion (lacrimal and mucuous glands of nose and mouth via 7)
deficit in lacrimation and salvation could mean ____
X salvitaory nuclei in the medulla
dorsal and ventral cochlear nuclei on the external surface of the _____ cerebellar peduncle
inferior
CN input to dorsal and ventral cochlear nuclei
auditory from CN 8
damage to dorsal and ventral cochlear nuclei
ipsilateral deafness of ipsilateral ear
cranial nerves leaving the medulla
CN 12 - CN 8
![](https://s3.amazonaws.com/brainscape-prod/system/cm/078/993/615/a_image_thumb.png?1659418374)
injury to CN leaving medulla will cause sx on the ____ side
same
Nuclei in the medulla
- hypoglossal nuclei
- dorsal motor nucleus of vagus
- vestibular nuclei, cochlear nuclei
- spinal nucleus of trigem
- inferior salvitory
- nucleus ambiguous
relay nuclei -
- gracilies
- cuneatus
- olivary nucleus
Two structures seen throughout the brainstem are the ___ and the ___
medial longitudinal fasciculus (mlf) and the reticular formation.
axons of the medial longitudinal fasciculus interconnect the___,___, ___, and ____
superior colliculus, vestibular nuclei, cranial nerve nuclei 3, 4, and 6, and the cervical spinal cord.
____ is the general name given to the core of the brainstem.
reticular formation
spinal trigem nucelus gets input from
trigem, facial, glossopharyngeal, vagus
groups of neurons within the reticular formation near the cranial nerve nuclei have what function?
coordinate reflexes and simple stereotyped responses
e.g. neurons of the ventrolateral medullary reticular formation coordinate functions controlled by the vagus nerve like swallowing, vomitting, initiation and modulation of respiratory rhythm, coughing, hiccuping, sneezing, and cardiovascular responses.
areas of the reticular formation that modulate neurons throughout the brain and spinal cord are located ____
medullay
noradrenergic neurons in the medulla continuous with the solitary nucleus and dorsal nucleus of the vagus and do what?
send ascending projections to the hypothalamus and are involved in cardiovascular and endocrine function
where are raphe nuclei found?
along the midline of the entire brainstem
Serotonergic neurons in the raphe of the rostral medulla receive projections from the
ALS
Serotonergic neurons in the raphe of the rostral medulla send descending serotonergic projections to the spinal cord that____
inhibit pain perception.
medullary raphe nuclei send descending axons that modulate proximal movement and posture as the ____
reticulospinal tract
where is the spinal trigem found?
in the medulla and pons
CAUDAL portion of the spinal trigem nucleus in the medulla is related to
pain, temperature and touch from the head