4.5 extra part 2 Flashcards
where is the spinal nucleus (V) and what does it do?
- lateral of medulla + posterior caudal part of pons
- GSA: pain, temperature from ipsilateral head and neck (continues as principal sensory nucleus in pons)
where is the dorsal nucleus of vagus (X) and what does it do?
- lateral rostral open part of medulla
- GVE): parasympathetic to heart, lungs, most of GI tract
Where is the nucleus ambigus (IX, X, XI) and what does it do?
- lateral rostral open part of medulla
- SVE: stylopharyngeus (IX), pahryngeal constrictors + muscles of soft palate + larynx (X) + soft palate muscles (XI)
Where is the nucleus solitarius (VII, IX, X) and what does it do?
- lateral rostral open part of medulla
- SVA (VII, IX, X): tastes fibers from the tongue
- GVA (IX, X): baroreceptors, chemoreceptors
Where is the vestibular (VIII) nuclei and what does it do?
- lateral rostral open part of medulla+ posterior caudal parts of pons
- SSA: equilibrium (at pontomedullary junction)
Where is the cochlear nuclei (VIII) and what does it do?
- lateral rostral open part of medulla
- SSA: hearing
Where is the hypoglossal nuclei (XII) and what does it do?
- medial rostral open part of medulla
- (GSE): all extrinsic and intrinsic muscles of the tongue (except palatoglossus)
Where is the motor facial nucleus (VII) and what does it do
- posterior caudal part of pons
- SVE/ SSE: muscles of facial expression
where is the abducens nucleus (VI) and what does it do?
- posterior caudal part of pons
- GSE): lateral rectus muscle abducts the eyes)
where is the motor nucleus (V) and what does it do?
- posterior cranial part of pons
- SVE/ SEE: muscels of facial expression
where is the principal sensory nucleus (v) and what does it do
- posterior cranial part of pons
- GSA: general sensation from face
where is the trochlear nucleus (IV) and what does it do?
- inferior colliculi
- supplies superior oblique muscle
where is the mesencephalic nuclei (v) and what does it do?
- inferior + superior colliculi
- GSA: proprioception of TMJ, muscles of mastication
where is the occulomotor (III) nucleus and what does it do?
- superior colliculi
- extraocular muscles (except superior oblique and lateral rectus), levator palpabrae superioris (upper eyelids)
Where is the Edinger- Westphal nucleus (III) and what does it do?
- superior colliculi
- sphincter pupillae, ciliaris muscle
