Cranial Nrvs
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
---|---|---|---|---|---|
show | medulla and meninges, spinal accessory nerve, vertebral arteries, anterior and posterior spinal arteries
🗑
|
||||
show | CN IX, X and XI
🗑
|
||||
show | CN VII and VIII
🗑
|
||||
Name the structure(s) that exit through or enter the foramen ovale. | show 🗑
|
||||
Name the structure(s) that exit through or enter the foramen lacerum. | show 🗑
|
||||
Name the structure(s) that exit through or enter the foramen rotundum. | show 🗑
|
||||
show | CN III, IV, VI and V1 of trigeminal nerve
🗑
|
||||
show | cribriform plate of the ethmoid bone
🗑
|
||||
show | superior rectus
🗑
|
||||
show | inferior rectus
🗑
|
||||
show | superior rectus and superior oblique
🗑
|
||||
show | inferior rectus and inferior oblique
🗑
|
||||
show | superior oblique
🗑
|
||||
show | inferior oblique
🗑
|
||||
show | inferior oblique
🗑
|
||||
What extraocular muscles in each eye does a physician test when he asks the patient to look to the pt's right and down? | show 🗑
|
||||
What will the globe do if the SO muscle is activated while a patient's eye is abducted? | show 🗑
|
||||
show | extorsion
🗑
|
||||
show | abduction
🗑
|
||||
show | unable to look to the right with the right eye when eyes are looking straight forward
🗑
|
||||
show | gaze palsy - left MR muscle would move the eye laterally, but very slowly. The LR on the right wouldn't move at all.
🗑
|
||||
show | R eye elevated and extorted
🗑
|
||||
show | inferior oblique
🗑
|
||||
show | inferior rectus
🗑
|
||||
Identify the muscle producing: pure intorsion with the eye positioned 39 deg away the nose. | show 🗑
|
||||
Besides the EOM, what else do the motor fibers of CN III directly innervate? | show 🗑
|
||||
show | presbyopia
🗑
|
||||
show | midbrain stroke or any type of lesion that would affect the bilat oculomotor nuclei; impingement of CN IIIs as they exit interpeduncular fossa
🗑
|
||||
show | CN III/nucleus damage
🗑
|
||||
show | the affected eye will be abducted, depressed and slightly intorted
🗑
|
||||
Describe the manifestations of Horner's syndrome. | show 🗑
|
||||
What might an astute triage nurse be looking for if she suspects the pt has a R sided CN III parasympathetic nerve problem? | show 🗑
|
||||
My ciliary muscles are relaxed because I'm giving my Edinger-Westphal nucleus a break. Which activity will be the easiest for me - reading the newest JAMA issue or spotting a bird across the street? | show 🗑
|
||||
show | Nerve itself; one nucleus complex feeds parasympathetics to both sides and their close proximity makes it hard to obliterate just one
🗑
|
||||
show | misalignment of gaze due to deviation of a globe
🗑
|
||||
What tract is just ventral to the trochlear nucleus in brainstem cross-section? | show 🗑
|
||||
show | trochlear nerve
🗑
|
||||
show | CN IV
🗑
|
||||
show | normally
🗑
|
||||
show | extorted and elevated, causing diplopia
🗑
|
||||
show | Head tilted to the R to offset the induced extorsion and held with chin downwards to elevate the normal eye to the level the affected eye is abnormally elevated to
🗑
|
||||
Monocular diplopia is due to... | show 🗑
|
||||
Binocular diplopia is due to... | show 🗑
|
||||
3 year-old Trinity is mimicking Nemo on TV and tilts to follow the screen. If she rolls her head to the R, what do her eyes naturally do? | show 🗑
|
||||
What muscle's paralysis would result in esotropia? | show 🗑
|
||||
show | ipsilateral LR and contralateral MR
🗑
|
||||
show | unilateral abducens and MLF lesion cause only contralateral LR to be functional
🗑
|
||||
What is typically the cause of bilateral internuclear ophthalmoplegia (INO) in a young pt? | show 🗑
|
||||
show | MLF (in this case via L CN III nucleus)
🗑
|
||||
Explain the mechanism behind internuclear ophthalmoplegia. | show 🗑
|
||||
List the 3 nuclei associated with CN VII. | show 🗑
|
||||
What might a physician expect to see if her pt has a LR muscle paralysis? | show 🗑
|
||||
show | It allows for smooth voluntary eye movement during lateral gaze by innervating the abducens nucleus ipsilaterally and sending fibers that travel in the MLF to the oculomotor nucleus contralaterally
🗑
|
||||
show | Just ventral to the MLF at levels of III, IV and V and in similar place at levels of VI and VII
🗑
|
||||
Which Brodmann's area includes the frontal eye fields (FEF)? | show 🗑
|
||||
show | rapid movement of eye under conscious control to allow abrupt change of point of fixation
🗑
|
||||
What Brodmann's areas include the extrastriate visual cortex? | show 🗑
|
||||
3 structures that are important for saccadic eye movements | show 🗑
|
||||
show | through the posterior commissure
🗑
|
||||
show | false
🗑
|
||||
Fibers coming from the retina traveling in the optic tract eventually reach the pretectal nuclei via what structure? | show 🗑
|
||||
show | convergence of the eyes, rounding of both lenses and constriction of the pupils
🗑
|
||||
show | syphilis
🗑
|
||||
show | syphilis likely selectively attacks the fibers that enter the E-W nucleus ventromedially; these fibers are only responsible for destroying light reflex fibers. Near triad fibers are ventrolateral and thus spared.
🗑
|
||||
Argyll-Robertson pupil | show 🗑
|
||||
show | retina - hypothalamus - reticular formation - down to C8-T2 preganglionic neurons in IML column - up sympathetic chain - superior cervical ganglion - carotid plexus - cavernous sinus - pupil
🗑
|
||||
show | obliteration of sympathetic fibers feeding the affected side's eye - Horner's syndrome sx
🗑
|
||||
show | False: only para synapses, symp just rides through the ganglion
🗑
|
||||
Eye exam findings: direct light into the R eye shows sluggish pupillary response, direct light into the L causes a brisk constriction of the R pupil. IMMEDIATELY after, direct light in the R pupil shows no constriction, but a steady dilation. Condition? | show 🗑
|
||||
Which trigeminal nucleus is closest to the MLF in a pontine cross-section? | show 🗑
|
||||
show | spinal nucleus of CN V is contiguous with substantia gelatinosa as far down as C6
🗑
|
||||
show | CN V, VII, IX and X
🗑
|
||||
show | EOMs have sensory receptors that originate in mes. nucleus of trigeminal that relay to CN III, IV and VI to control eye movements
🗑
|
||||
show | mesencephalic nucleus of CN V
🗑
|
||||
show | nerve from motor nucleus of trigeminal
🗑
|
||||
show | corneal reflex, chief sensory nucleus of trigeminal and its peripheral afferent through V1
🗑
|
||||
show | the jaw will be towards the L; the L. lateral pterygoid moves the jaw to the R. Therefore, the strong R. lateral pterygoid will move jaw to same side as lesion
🗑
|
||||
If the nerve going to ocular muscles on the R is severed and a physician takes a wisp of cotton to touch the R cornea, what should she see the pt do? | show 🗑
|
||||
show | nasal mucosa sensation and nociceptors - CN V
🗑
|
||||
Name the condition arising from lesions to the motor nucleus or root of CN VII. | show 🗑
|
||||
show | dorsal - lower face
ventral - upper face
🗑
|
||||
show | CN VII - stapedius
CN V - tensor tympani
🗑
|
||||
show | bilateral
🗑
|
||||
show | Bell's palsy affects the nerve after it leaves the facial motor nucleus and thus an entire side of the face. Stroke will cause a total lower face paresis but just weakness of the upper face.
🗑
|
||||
show | lagophthalmos
🗑
|
||||
An UMN lesion in the motor cortex in the facial region would cause what else in addition to facial muscle paralysis in the contralateral lower face? | show 🗑
|
||||
show | lacrimal, submandibular and sublingual glands
🗑
|
||||
What is the most easily detectable symptom of a lesion of the division of the facial nerve that arose from the salivatory nucleus? | show 🗑
|
||||
What are the CNs involved in swallowing? | show 🗑
|
||||
Where do fibers innervating the parotid gland originate (what nucleus)? | show 🗑
|
||||
In which direction will the palate deviate in a pt with a glossopharyngeal lower motor nerve lesion? | show 🗑
|
||||
A pt comes to you for uncontrolled BP. You test her CNs and notice her palate deviates to the right. What might this tell you? | show 🗑
|
||||
show | the portion of the nucleus solitarius receiving afferents via CNs VII and IX
🗑
|
||||
If an 84 yr old woman can press her tongue into her R cheek, what is your conclusion about her neuromuscular status? | show 🗑
|
||||
What section of the brainstem is the hypoglossal nucleus within? | show 🗑
|
||||
show | C1-2 for SCM
C3-4 for trapezius
🗑
|
||||
What CN nucleus must be intact to elecit a negative chronotropic effect on the heart? | show 🗑
|
||||
show | glossopharyngeal
🗑
|
||||
Which CN(s) innervate the pharyngeal constrictors? | show 🗑
|
||||
show | any interruption of CN X innervating laryngeal muscles
🗑
|
||||
show | bulbar portion of CN XI
🗑
|
||||
True/False: Unilateral lesions of the nucleus ambiguus will not produce detectable alterations of the voice. | show 🗑
|
||||
Trace the pathway for saccadic eye movements beginning with the retina. | show 🗑
|
||||
Input from what 2 structures is needed for initiation and accurate targeting of saccadic eye movements? | show 🗑
|
||||
Smooth pursuit eye movements require input from what cortical structures for initiation and accurate guidance of eyes to track visual targets? | show 🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
sirprakes
Popular Neuroscience sets