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Everything about the 12 Cranial Nerves!
Where do most of the cranial nerves originate?
Cranial Nerve #1
Cranial Nerve #2
Cranial Nerve #3
Cranial Nerve #4
Cranial Nerve #5
Cranial Nerve #6
Cranial Nerve #7
Cranial Nerve #8
Cranial Nerve #9
Cranial Nerve #10
Cranial Nerve #11
Cranial Nerve #12
first order neuron
What part of the sensory pathway is outside the CNS in a ganglion?
second order neuron
What part of the sensory pathway is in the brainstem?
third order neuron
What part of the sensory pathway is in the thalamus?
Which pathway begins in a ganglion, synapses and crosses in the brainstem, synapses in the thalamus, and then travels to the cortex?
Which pathway begins in the precentral gyrus, travels through the internal capsule, synapses in the brainstem, and then travels to different muscles?
What is a LMN symptom of weakened muscle tone?
What is the symptom described as increased muscle tone?
Why are most cranial nerves bilateral?
Are bilateral or contralateral projections stronger?
Which cranial nerve bypasses the thalamus and brainstem?
Which cranial nerves bypasses the brainstem (not the thalamus)?
The olfactory nerve starts in the _______ of the navel cavity, synapses at the olfactory bulb, travels through the olfactory tract, and then to the _______ of the cortex.
The optic nerve originates from the _____, travels down the optic nerve, crosses at the optic _____, travels down the optic tract through the _____, and ends in the_____ in the occipital lobe.
Which nerve provides the sensory for smell?
Which nerve provides the sensory for vision?
Through the optic nerve which hemisphere of the brain receives the left half of vision from both eyes?
oculomotor, trochlear, abducens
Which nerves provide the motor for the eyes?
The inferior rectus, medial rectus, superior rectus, and inferior oblique are controlled by this nerve.
Ptosis of eyelid, dilation of pupil, and eye abducted are damage symptoms of which nerve?
Which nerves have nuclei in the midbrain?
Which nerves is the only one to start dorsally and then project ventrally?
The superior oblique is controlled by this nerve.
Which nerve controls eye gaze lateral and downward?
Which nerve controls eye gaze only lateral?
abducens, trigeminal, facial, acoustic
Which nerves have nuclei in the pons?
The lateral rectus is controlled by this nerve.
Which nerve has the largest diameter?
The larger root of the trigeminal nerve is _____?
opthalmic, maxillary, and mandibular
What are the three branches of the trigeminal nerve?
This branch of the trigeminal nerve provides sensory to the upper face inculding the conjunctiva, corena, forehead, eyelid, and bridge of nose?
This branch of the trigeminal nerves provides sensory to the middle face including the cheeks, nasal cavity, and upper jaw.
This branch of the trigeminal nerve provides sensory and motor to the lower face including the jaw, teeth, gums, anterior 2/3 of tongue, external auditory meatus, and external tympanic membrane.
How many trigeminal nuclei are there?
main trigeminal nucleus
Which trigeminal nucleus is responsible for fine touch and vibration?
spinal trigeminal nucleus
Which trigeminal nucleus is responsible for pain and temperature?
mesencephalic trigeminal nucleus
Which trigeminal nuclei is responsible for proprioception?
Is the facial nerve primarily sensory or motor?
Which cranial nerve wraps around the abducens before exiting the brainstem?
This is a LMN lesion in the facial nerve that results in paralysis in the ipsilateral face.
Which cranial nerve mediate the taste from the anterior 2/3 of the tongue?
Which cranial nerve mediates the taste from the posterior 1/3 of the tongue?
Which cranial nerve mediates the sensory of the anterior 2/3 of tongue?
Damage in the UMN of the facial nerve results in damage of the _____ face on the _____ side of the face?
The acoustic part of the acoustic nerve is responsible primarily for _____.
The vestibular division of the acoustic nerve is responsible primarily for _____.
Is the glossopharyngeal nerve sensory or motor?
Which cranial nerves are important for phonation and swallowing?
The vagus nerve is _____% sensory and _____% motor.
The nerve helps the vagus nerve by helping to innervate the muscles of the larynx.
This cranial nerve innovates the tounge muscles.
glossopharyngeal, vagus, hypoglossal
Which nerves have nuclei in the medulla?
Which nerve has its nuclei in the spinal cord?
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