The brainstem and cerebellum II Flashcards

1
Q

GSE stands for and innervates

A

General somatic efferent, motor innervation of somatic musculature

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2
Q

SVE stands for and innervates

A

Special visceral efferent, ,motor innervation of brachiomeric musculature

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3
Q

GVE stands for and innervates

A

General visceral efferent, parasympayheic ganglion nuclei and motor innervation of viscera

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4
Q

GVA stands for and innervates

A

General visceral afferent, sensory input from viscera

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5
Q

SVA stands for and innervates

A

Special visceral afferent, taste

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6
Q

GSA stands for and innervates

A

General somatic afferent, general somatosensory input

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7
Q

SSA stands for and innervates

A

Special somatic afferent, special senses of hearing and balance

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8
Q

how many territories are in the spinal cord? How many in the brain stem?

A

4 in the spinal cord. 7 in the brainstem

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9
Q

what does the oculomotor nerve do?

A

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

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10
Q

what does the trochlear nerve do?

A

it supplies the extraocular muscles as a motor neuron

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11
Q

where are the III, IV cranial nerves?

A

the oculomotor and trochlear nerves are in the mesencephalon

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12
Q

the trigeminal nerve does? its in the metencephalon

A

supplies the muscles of mastication and general sensation of head and face, it has 3 sensory nuclei

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13
Q

what does the abducens do? in the metencephalon

A

it innervates the extraocculomoter muscle

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14
Q

what does the facial/intermediate nerve do? its in the pons

A
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
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15
Q

what does the vestibulocochlear nerve do? its in the pons/medulla

A

– Hearing and balance
(SSA)
Cochlear and
vestibular nn

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16
Q

where are the ascending pathways located?

A

in the tegmentum

17
Q

where are the oldest desceding pathways located?

A

in the tegmentum

18
Q

where are the newest descending pathways found?

A

in the base of the brain. In the cortico-spinal/pyramidal tract, or in the cortico pontine

19
Q

go to notes and go over all the pics on the slide

A

its the only way to study this

20
Q

How many and name the peduncles of the cerebellum

A

there are 3: the brachia conjunctiva, the brachia pontis, and the restiform/juxtarestiform body

21
Q

how is the cerebellum organised?

A

in 2 hemispheres, with a vermis in the middle

22
Q

does the cerebellum have a cover?

A

yes it is the tentorium cerebelli

23
Q

where is the cerebellum found in the skull?

A

in the posterior cranial fossa

24
Q

name the lobes of the cerebellum (remember that they are many lobules and fissure)

A

the anterior lobe, the flocunodular lobe, posterior lobe.

There are the primary, horizontal, posterolateral fissures

25
Q

how many layers does the cortex of the cerebellum have?

A

3 layers. Cortex, white matter (arbrum vitae), and deep nuclei

26
Q

how many deep nuclei does the cerebellum have?

A

4- dentate, fastigial, vestibular, interposed

27
Q

what is the cisterna magna

A

it is one of the 3 openings in the subarachnoid space between the arachnoid and the pia mater. It is between the cerebellum and the dorsal face of the medullar oblongata

28
Q

what are the circumventricular organs?

A

the neurohypophysis, subfornical organ, area postrema (a chomoreceptor or emetic trigger zone), pineal body. Here the blood brain barrier is less efficient