The brainstem and cerebellum II Flashcards
(28 cards)
GSE stands for and innervates
General somatic efferent, motor innervation of somatic musculature
SVE stands for and innervates
Special visceral efferent, ,motor innervation of brachiomeric musculature
GVE stands for and innervates
General visceral efferent, parasympayheic ganglion nuclei and motor innervation of viscera
GVA stands for and innervates
General visceral afferent, sensory input from viscera
SVA stands for and innervates
Special visceral afferent, taste
GSA stands for and innervates
General somatic afferent, general somatosensory input
SSA stands for and innervates
Special somatic afferent, special senses of hearing and balance
how many territories are in the spinal cord? How many in the brain stem?
4 in the spinal cord. 7 in the brainstem
what does the oculomotor nerve do?
it is a motor neuron for the extraocular eye muscles.
it sends parasympathetic innervation to smooth intrinsic eye muscles. It has an accessory oculomotor nucleus that innervates the iris sphincter
what does the trochlear nerve do?
it supplies the extraocular muscles as a motor neuron
where are the III, IV cranial nerves?
the oculomotor and trochlear nerves are in the mesencephalon
the trigeminal nerve does? its in the metencephalon
supplies the muscles of mastication and general sensation of head and face, it has 3 sensory nuclei
what does the abducens do? in the metencephalon
it innervates the extraocculomoter muscle
what does the facial/intermediate nerve do? its in the pons
Facial expression muscles (SVE) motor n. – Parasymp. to Glands (submandibular, sublingual & lacrimal, nose palate, pharynx) (GVE) superior salivatory n. – Taste from the tongue (SVA) n. of the solitary tract – General sensation from ear skin (GSA) trigeminal n
what does the vestibulocochlear nerve do? its in the pons/medulla
– Hearing and balance
(SSA)
Cochlear and
vestibular nn
where are the ascending pathways located?
in the tegmentum
where are the oldest desceding pathways located?
in the tegmentum
where are the newest descending pathways found?
in the base of the brain. In the cortico-spinal/pyramidal tract, or in the cortico pontine
go to notes and go over all the pics on the slide
its the only way to study this
How many and name the peduncles of the cerebellum
there are 3: the brachia conjunctiva, the brachia pontis, and the restiform/juxtarestiform body
how is the cerebellum organised?
in 2 hemispheres, with a vermis in the middle
does the cerebellum have a cover?
yes it is the tentorium cerebelli
where is the cerebellum found in the skull?
in the posterior cranial fossa
name the lobes of the cerebellum (remember that they are many lobules and fissure)
the anterior lobe, the flocunodular lobe, posterior lobe.
There are the primary, horizontal, posterolateral fissures
