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112 Cards in this Set
- Front
- Back
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What kinds of Fibers does the Olfactory (1) Nerve Contain?
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-Sensory (Only) - Smell
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What kinds of Fibers does the Optic (2) Nerve Contain?
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-Sensory (Only) - Sight
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What kinds of Fibers does the Oculomotor (3) Nerve Contain?
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-Somatic Motor - Ocular Muscles
-Parasympathetic - Preganglionics to the Ciliary Ganglion |
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What kinds of Fibers does the Trochlear (4) Nerve Contain?
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-Somatic Motor (Only) - Superior Oblique Muscle
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What kinds of Fibers does the Trigeminal (5) Nerve Contain?
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-Somatic Motor
-Sensory -Postganglionic Parasympathetics |
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What kinds of Fibers does the Abducens (6) Nerve Contain?
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-Somatic Motor - Lateral Rectus Muscle
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What kinds of Fibers does the Facial (7) Nerve Contain?
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-Somatic Motor
-Sensory -Parasympathetic |
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What kinds of Fibers does the Vestibulocochlear (8) Nerve Contain?
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-Sensory (Special) - Balance and Hearing
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What kinds of Fibers does the Olfactory Nerve Contain?
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-Somatic Motor
-Sensory -Parasympathetic |
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What kinds of Fibers does the Vagus (10) Nerve Contain?
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-Somatic Motor
-Sensory -Parasympathetic |
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What kinds of Fibers does the Spinal Accessory (11) Nerve Contain?
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-Somatic Motor - SCM and Trapezius
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What kinds of Fibers does the Hypoglossal Nerve (12) Contain?
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-Somatic Motor - Tongue Muscles
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Which Cranial Nerves have only 1 Function? What is their function?
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-Olfactory (1) - Sensory (Special) - Smell
-Optic (2) - Sensory (Special) - Sight -Oculomotor (3) - Ocular Muscles (Somatic Motor), Preganglionic Parasympathetic (Ciliary Ganglion) -Trochlear (4) - Somatic Motor - Superior Oblique -Facial (6) - Somatic Motor - Lateral Rectus -Vestibulocochlear (8) - Sensory (Special) - Balance/Hearing -Spinal Accessory (11) - Somatic Motor - SCM, Trapezius -Hypoglossal (12) - Somatic Motor - Tongue Muscles |
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Where does the Olfactory (1) Nerve arise?
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Olfactory Epithelium
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Which CN passes through the Cribiform Plate of the Ethmoid Bone?
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Olfactory (1) Nerve
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Where does fibers from the Olfactory (1) Nerve terminate?
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Primary Olfactory Cortex
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What is Anosmia? How can it result?
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-Diminished Sense of Smell
-Lesion of the Olfactory (1) Nerve -Upper Resp. Tract Infection -Fracture of Cribiform Plate -Frontal Lobe Tumor |
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Where in the Ethmoid Bone does the Olfactory (1) Nerve pass through?
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Cribiform Plate
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Which Nerve carries Smell Sensory Fibers? What other fibers does this nerve carry?
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-Smell
-None |
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Where does the Optic (2) Nerve arise from?
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Retina of the Eye
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Where do fibers of the Optic (2) Nerve cross?
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Optic Chiasma
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Where do fibers of the Optic (2) Nerve cross? Where do they synapse?
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-Optic Chiasma
-Thalamus (LGN) |
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Where does information from the Left Visual Field go to?
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Right Visual Cortex
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Where does information from the Upper Side of the Visual Field project to?
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Lower Side of the Calcarine FIssure
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What is a Central Lesion to the Optic Chiasm likely to cause?
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Contralateral Deficits
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What is a Lateral Lesion to the Optic Chiasm likely to cause?
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Ipsalateral Deficits
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Which Nerve is Responsible for Vision? What other fibers does this nerve carry?
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-Optic (2) Nerve
-None you fucking idiot |
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Which Nerves are responsible for Eye Movement?
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-Oculomotor (3)
-Trochlear (4) -Abducens (6) |
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What are the 6 Extraocular Muscles? What are they Innervated by?
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-Oculomotor (3)
-Superior Rectus -Inferior Rectus -Medial Rectus -Inferior Oblique -Trochlear (4) - Superior Oblique -Abudcens (6) - Lateral Rectus |
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Which Extraocular Muscles are Innervated by the Oculmotor (3) Nerve? What are their functions?
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-Superior Rectus - Elevates
-Inferior Rectus - Depresses -Medial Rectus - ADducts -Inferior Oblique - Elevates ADducted Eye, Extorts ABducted Eye |
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Which Extraocular Muscles are Innervated by the Trochlear (4) Nerve? What are their functions?
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-Superior Oblique - Depresses ADducted Eye, Intorts ABducted Eye
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Which Extraocular Muscles are Innervated by the Abducens (6) Nerve? What are their functions?
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-Lateral Rectus - ABducts
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What the fuck does the Oculomotor (3) Nerve do?
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-Innervates all the Ocular Muscles except Lateral Rectus and Superior Oblique
-Raises the Eyelid -Directs the Eyeball -Constrict the Iris -Controls Lens Shape |
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What types of Fibers does the Oculomotor (3) Nerve contain?
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-Somatic Motor - Eye Movement
-Preganglionic Parasympathetic (Ciliary Ganglion) - Constricts the Iris and Controls |
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What are the Parasympathetic Functions of the Oculomotor (3) Nerve?
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-Constricting the Iris
-Controlling Lens Shape |
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Which muscles of the Eye receive Parasympathetic Fibers of the Oculomotor (3) Nerve?
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-Sphincter of the Pupil - Constriction of the Eye
-Lens - Accomodation |
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Where does the Oculomotor (3) Nerve Emerge? Between which arteries does the Oculomotor (3) Nerve emerge?
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-Interpeduncle Fossa
-Posterior Cerebral Artery and Superior Cerebellar Artery |
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Where is the Motor Nucleus of the Oculomotor (3) Nerve?
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Rostral Midbrain, Near the Midbrain, Ventral to PAG Region
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Where is the Parasympathetic Nucleus of the Oculomotor (3) Nerve?
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Edinger-Westphal, Dorsal to Motor for CN III
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What happens with a lesion to the Oculomotor (3) Nerve?
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-Eye Position will be Down and Out (ABducted)
-Ptosis (Lid Droop) - Levator Palpebrae Superioris -Pupil Dilation (Mydriasis) and Loss of Accomodation |
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A Patient comes in with Ptosis and their eye is downward and ABducted. What the fuck happened?
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Oculomotor (3) Nerve Lesion
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What is Opthalmoplegia?
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Paralysis of 1 or more Ocular Muscles
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What does the Pupillary Light Reflex Involve? Which leg involves which nerve?
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-Sensory (Afferent) - Optic (2) Nerve
-Motor (Efferent) - Parasympathetics of the Oculomotor (3) Nerve |
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How is the Pupillary Light Reflex Initiated? What Happens? How?
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-Light is shined into an eye
-Optic Nerve (2) Fibers carry the stimulus to the Edinger-Westphal Nucleus of CN III -Parasympathetics of the Oculomotor (3) Nerve result in constriction |
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What types of fibers does the Trochlear (4) Nerve?
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Somatic Motor only
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What would be the consequences of a Trochlear (4) Nerve Lesion be?
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-Difficulty moving the Eye Inferior and Lateral
-Leads to Double Vision |
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Where is the Trochlear Nuclei Found?
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-Midbrain
-Caudal to the Oculomotor Nucleus |
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What Innervates the Superior Oblique Muscle?
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Trochlear (4) Nerve
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Where do the Axons of the Trochlear (4) Nerve cross?
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Dorsal Midbrain
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If a patient comes to you and they TILT their head to their right when trying to focus on an object, what would you expect to be the problem?
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-Left Trochlear (4) Nerve Lesion
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If a Patient has a Trochlear (4) Nerve Lesion, what will they have difficulty doing?
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Trouble looking down and in
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What Muscle is responsible for Lateral Gaze? What is it innervated by?
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-Lateral Rectus
-Abudcens (6) Nerve |
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Where is the Abudcens (6) Nucleus found?
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Pons
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If a patient comes to you and they TURN their head to their right when trying to focus on an object, what would you expect to be the problem?
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Abudcens (6) Nerve Lesion
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What types of Fibers does the Abudcens (6) Nerve contain?
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-Somatic Motor
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Which Nerves are Responsible for COnjugate Eye Movements?
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3, 4, 6
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What is the MLF? What does it do? What function does it serve?
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-Medial Longitudinal Fasciculus
-Connects the 6th Nerve Nucleus to the 3rd Nerve Nucleus -Conjugate Eye Movement |
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What types of problems might indicate problems with the conjugate eye reflex?
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Misalignment or Diplopia
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What types of fibers does the Trigeminal (5) Nerve contain?
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Sensory and Motor
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Through which branches does the Trigeminal (5) Nerve send Sensory? Where?
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-V1 and V2
-Face |
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Through which branches does the Trigeminal (5) Nerve send Motor? Where?
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-V3
-Mastication |
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Where does the Trigeminal Nerve enter the Pons?
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Laterally
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Where is the Motor (Masticator) Nucleus of the Trigeminal Nerve Located?
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-Pons
-Medial to other Nuclei but still Lateral |
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What nerve does the Jaw Jerk Reflex test?
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Trigeminal
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What types of Fibers does the Facial (7) Nerve contain?
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-Motor
-Sensory -Parasympathetic |
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Describe the path of the Facial Nerve
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-Pons
-Internal Acoustic Meatus -Stylomastoid Foramen -Lateral Aspect of the Face |
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What types of Fibers does the Facial (7) Nerve contain?
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-Motor
-Sensory -Parasympathetic |
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What are the Motor Functions of the Facial (7) Nerve?
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-Facial Expression
-Parasympathetic Impulses to Lacrimal and Salivary Glands |
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Describe the path of the Facial Nerve
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-Pons
-Internal Acoustic Meatus -Stylomastoid Foramen -Lateral Aspect of the Face |
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What are the Sensory Functions of the Facial (7) Nerve?
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-Taste - Anterior 2/3 of the Tongue
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What are the Motor Functions of the Facial (7) Nerve?
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-Facial Expression
-Parasympathetic Impulses to Lacrimal and Salivary Glands |
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Which Nerve wraps around the ABducens Nucleus?
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Facial (7) Nerve
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What are the Sensory Functions of the Facial (7) Nerve?
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-Taste - Anterior 2/3 of the Tongue
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If you can't taste anything on the Anterior 2/3 of your tongue, what the fuck is wrong with you?
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Your life sucks.
Your wife is fucking the pool boy. |
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Which Nerve wraps around the ABducens Nucleus?
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Facial (7) Nerve
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If you can't taste anything on the Anterior 2/3 of your tongue, what the fuck is wrong with you?
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Your life sucks.
Your wife is fucking the pool boy. |
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If you can't taste anything on the Anterior 2/3 of your tongue, what the fuck is wrong with you?
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Facial (7) Nerve lesion
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What is Bell's Palsy? What nerve is affected?
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-Paralysis of Facial Muscles and Loss of Taste Sensation on Affected Side
-Facial (7) Nerve |
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If you can't taste anything on the Anterior 2/3 of your tongue, what the fuck is wrong with you?
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Facial (7) Nerve lesion
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A Patient comes in with Paralysis of Facial Muscles and Loss of Taste Sensation on Affected Side, what is wrong? What nerve is affected?
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-Bell's Palsy
-Facial (7) Nerve |
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What is Bell's Palsy? What nerve is affected?
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-Paralysis of Facial Muscles and Loss of Taste Sensation on Affected Side
-Facial (7) Nerve |
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A Patient comes in with Paralysis of Facial Muscles and Loss of Taste Sensation on Affected Side, what is wrong? What nerve is affected?
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-Bell's Palsy
-Facial (7) Nerve |
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What is the Corneal Reflex?
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-Brush the Cornea
-Results in Blinking of Both Eyes |
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Which Cranial Nerves are involved in the Corneal Reflex?
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-Sensory - Opthalmic Branch of Trigeminal Nerve (V1)
-Motor - Facial Nerve (VII) |
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Which Nerve Innervates Orbicularis Oculi?
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Facial (7) Nerve
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What types of Fibers does the Vestibulocochlear (8) Nerve Contain?
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Sensory (special)
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Which Nerve is responsible for Hearing and Balance?
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Vestibulocochlear (8) Nerve
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Hey Douchebag, describe the path of the Vestibulocochlear (8) Nerve.
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-Apparatus of the Inner Ear
-Internal Acoustic Meatus -Brainstem - Pons-Medulla Border |
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What is the Weber Test?
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-Vibrating Tuning Fork on Middle of Head
-Ask if the person hears or feels it better on 1 side -Can test for Unilateral Loss: Sensory Loss - Better in Normal Side, Conductive Loss - Better in Abnormal Ear |
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Which CNs will be affected by Tumors of the Auditory Meatus?
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Vestibulocochlear and Facial
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What types of Fibers does the Glossopharyngeal (9) Nerve carry?
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-Motor
-Sensory -Parasympathetic |
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What the fuck is the Motor Innervation of the Glossopharyngeal (9) Nerve?
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-Part of the Tongue and Pharynx
-Parotid Salivary Gland |
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What the fuck is the Sensory Innervation of the Glossopharyngeal (9) Nerve?
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-Taste
-General Sensory from Tongue and Pharynx |
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What types of Fibers does the Vagus (10) Nerve Carry?
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-Motor
-Sensory -Parasympathetic |
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What is the only CN that extends beyond the head and neck?
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Vagus (10) Nerve
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What is the Sensory function of the Vagus (10) Nerve?
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Taste, Epiglottis
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Which 2 Nerves send General Visceral Afferent (Sensory) Branches? Where?
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-Glossopharyngeal (9) Nerve - Carotid Body and Sinus
-Vagus (10) Nerve - Everyfuckingwhere |
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Which Nerves share control of speech and swallowing? Through which components?
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-Glossopharyngeal (9) and Vagus (10) Nerves
-Branchial Motor |
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Where are the Branchial Motor Components of the Glossopharyngeal (9) and Vagus (10) Nerves found?
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Nucleus Ambiguus of the Medulla
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What nerves is the Gag Reflex testing? Which Components?
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-Glossopharyngeal (9) and Vagus (10) Nerves
-Sensory and Motor |
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What types of Fibers does the Spinal Accessory (11) Nerve Contain?
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Motor Only
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Where does the Spinal Accessory (11) Nerve leave the Cranium?
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Jugular Foramen
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What does the Spinal Accessory (11) Nerve Innervate?
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-Larynx
-Pharynx -Soft Palate -Trapezius -SCM |
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Describe the path of the Optic (2) Nerve.
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-Retina
-Optic Chiasm -LGN of Thalamus -Occipital Lobe |
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Where do Axons of the Olfactory (1) Nerve Synapse?
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Olfactory Bulb
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Where do Axons of the Olfactory Nerve cross?
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Never.
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Where are the Cell bodies of the Spinal Accessory (11) Nerve found?
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Zpinal Cord
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What types of fibers does the Hypoglossal (12) Nerve contain?
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Motor only
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Where do fibers of the Hypoglossal (12) Nerve arise? Where do they exit the skull?
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-Medulla
-Hypoglossal Canal |
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What is the Hypoglossal (12) Nerve responsible for?
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-Muscles of the Tongue
-Speech and Swallowing |
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What does a UMN Lesion of the Hypoglossal (12) Nerve result in?
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Contralateral Atrophy and Deviation
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What does a LMN Lesion of the Hypoglossal (12) Nerve result in?
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Ipsalateral Atrophy and Deviation
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