Brainstem and cranial nerves Flashcards
brainstem (3 parts)
midbrain, pons, medulla
midbrain (4 parts)
tectum, cerebral aqueduct, tegmenjtum, cerebellar peduncles
tectum
alertness, visual auditory reflex
cerebral aqueduct
links ventricles 3 and 4
tegmentum
dopamine synthesis via substantial nigra
cerebellar peduncles
motor coordination
pons
cardiac and secondary respiratory centers
cardiac center
cardioaccelerator, cardioinhibitor
secondary respiratory center
pontine, apneustic
medulla (4 parts)
primary respiratory center, vasomotor center, protective reflexes, vomiting center
primary respiratory center (3 parts)
pre botzinger complex, dorsal ventral respiratory group
vasomotor center
vasoconstrictor superior, vasodilator inferior
protective reflexes
coug/larygospasm, gag,vomiting
cough and laryngospasm reflex
airway irritation, internal branch of superior laryngeal nerve and CN X
gag/vomiting reflex
noxious stimuli, CN IX and X
chemoreceptor trigger zone
integrates with gag/vomiting reflex centers in medulla, responds to noxious stimuli
CN origination (frontal lobe, midbrain, pons, medulla)
F:1-2 M:3-3 P-5-8 M:9-12
cranial nerves name
olfactory, optic, oculomotor, trochlear, trigeminal, abducens, facial, vestibulocochlear, glossopharyngeal, vagus, spinal accessory, hypoglassal
CN sensory, motor, both?
S,s,m,m,b,m,b,s,b,b,m,m
gag reflex CN?
IX,X
swallow reflex CN?
IX,X,XII
cough reflex CN?
superior and recurrent laryngeal nerves via CN X
laryngospasm reflex CN
superior and recurrent laryngeal nerves via CN X
oculocardiacgastric reflex innervation
afferent limb: V1, efferent limb: X
oculocardiacgastric reflex treatment
glycopyrollate 0.2 mg IV, zoltan 4 mg IV
cerebellum
fine movement, posture, muscle memory
Which CN contain PSNS ganglia
CN III, VII, IX, X
