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Gross Anatomy Skull and brain 1/21/10
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Identify the Bone Frontal Bone Temporal Bone Zygomatic Bone Maxilla
Mandible
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Identify the Landmark Supraorbital Notch (Foramen)
Infraorbital Foramen Mental Foramen
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Identify the Bone Frontal Parietal Temporal Sphenoid Zygomatic
Occipital Maxilla Mandible
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“PEST OF 6” Parietal Ethmoid Sphenoid Temporal Occipital Frontal
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Identify the Landmark Temporal Process (Zygomatic Bone)
Zygomatic Process (Temporal Bone) Condylar Process (Mandible) External Auditory Meatus Coronoid Process (Mandible) External Occipital Protuberance Ramus of the Mandible Mental Foramen Mastoid Process Styloid Process
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Identify the Bone Frontal Bone Ethmoid Bone Sphenoid Bone
Temporal Bone Occipital Bone
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Identify the Landmark Crista Galli Optic Canal Lesser Wing
of the Sphenoid Cribiform plate Greater Wing of the Sphenoid Foramen Ovale Foramen Spinosum Foramen Lacerum Carotid Canal Jugular Foramen Foramen Magnum Hypoglossal Canal
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More Foramina (and what runs through them)
Optic Canal Optic Nerve (II) Ophthalmic artery Foramen Ovale Mandibular Nerve (V3) Accessory meningeal artery Foramen Spinosum Middle meningeal artery Carotid Canal Internal carotid artery Internal carotid nerve plexus Jugular Foramen Glossopharyngeal Nerve (IX) Vagus Nerve (X) Accessory Nerve (XI) Sigmoid sinus Posterior Meningeal Artery Hypoglossal Canal Hypoglossal Nerve (XII)
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Things we didn’t see yet…
Superior Orbital Fissure Oculumotor nerve (III), Trochlear nerve (IV), Ophthalmic nerve (V1), Abducens nerve (VI), Superior ophthalmic vein Foramen Rotundum Maxillary nerve (V2) Internal Auditory Meatus Facial nerve (VII), Vestibulocochlear nerve (VIII), Labyrinthine artery SOF FR IAM
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OVALE: Otic ganglion (just inferior) V3 cranial nerve
Accessory meningeal artery Lesser petrosal nerve Emissary veins
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Identify the Structure
Corpus Callosum Fornix Cingulate Gyrus Central Sulcus Parieto-Occipital Sulcus Septum Pellucidum Anterior Commisure
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Identify the Structure
Corpus Callosum Fornix Cingulate Gyrus Central Sulcus Parieto-Occipital Sulcus Pineal Body Septum Pellucidum Massa Intermedia Anterior Commisure Fourth Ventricle Mammillary Body Hypophysial Stalk
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Identify the Structure
Primary Fissure Tonsil Nodule
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Cranial nerves Olfactory (I) Optic (II) Oculomotor (III)
Trochlear (IV) Trigeminal (V) Abducens (VI) Facial (VII) Vestibulocochlear (VIII) Glossopharyngeal (IX) Vagus (X) Hypoglossal (XII) Accessory (XI)
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Mnemotechnics on cranial nerves
"On Old Olympus Towering Tops, A Finn And German Viewed Some Hops": From I to XII: Olfactory Optic Occulomotor Trochlear Trigeminal Abducens Facial Auditory [or Vestibulocochlear] Glossopharyngeal Vagus Accessory [or Spinal root of the accessory] Hypoglossal Alternatively:"Oh! Oh! Oh! To Touch And Feel A Girls Vagina, Ah! Heaven!". Alternatively: "Oh, Oh, Oh, To Touch And Feel Virgin Girls Vaginas And Hymens". Make some new (that will be more stable in your own mental environment)!
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Again! Olfactory (I) Optic (II) Oculomotor (III) Trochlear (IV)
Abducens (VI) Trigeminal (V) Facial (VII) Vestibulocochlear (VIII) Glossopharyngeal (IX) & Vagus (X) Hypoglossal (XII)
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Cranial nerves: sensory, motor or both
"Some Say Marry Money But My Brother Says Big Brains Matter More" From I to XII: Sensory Motor Both
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Name the Function! Olfactory (I)- smell Optic (II)- sight
Oculomotor (III)- eyelid & eyeball movement Trochlear (IV)- turns eye down/out (sup. obl.) Trigeminal (V)- chewing, face touch and pain Abducens (VI)- turns eye laterally (lat. rectus) Facial (VII)- controls most facial expressions, tears and saliva, taste (ant. 2/3) Vestibulocochlear (VIII)- hearing, equilibrium Glossopharyngeal (IX)- taste (post. 1/3), senses carotid BP Vagus (X)- senses aortic BP, slows heart rate, stimulates digestive organs taste Hypoglossal (XII)- controls tongue movement
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Cavernous sinus content
O TOM CAT: O TOM are lateral wall components, in order from superior to inferior. CA are the components within the sinus, from medial to lateral. CA ends at the level of T from O TOM. See diagram. Occulomotor nerve (III) Trochlear nerve (IV) Ophthalmic nerve (V1) Maxillary nerve (V2) Carotid artery Abducent nerve (VI) T: When written, connects to the T of OTOM
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Name the Function! Accessory (XI)-
controls trapezius and sternocleidomastoid
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Question Which structure carries fibers with motor and sensory information from the cortex? A. B. C. B A C
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Answer Which structure carries fibers with motor and sensory information from the cortex? A. B. C. B A C
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Question During a rare and complicated surgery, a doctor accidentally drops a jelly bean into the patient’s skull, where it becomes lodged in the marked structure. Which of the following symptoms will the patient display? A. Difficulty swallowing B. Difficulty chewing C. Drifting of eyes inward D. Partial loss of vision E. Diarrhea
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Answer During a rare and complicated surgery, a doctor accidentally drops a jelly bean into the patient’s skull, where it becomes lodged in the marked structure. Which of the following symptoms will the patient display? A. Difficulty swallowing B. Difficulty chewing C. Drifting of eyes inward D. Partial loss of vision E. Diarrhea
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Question During another procedure, the same careless doctor accidentally transects the nerve running through the marked hole. Which of the following symptoms will the patient display? A. Partial loss of taste sensation B. Tongue deviates left C. Tongue deviates right D. Left shoulder drop E. Right shoulder drop F. Diarrhea
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Answer During another procedure, the same careless doctor accidentally transects the nerve running through the marked hole. Which of the following symptoms will the patient display? A. Partial loss of taste sensation B. Tongue deviates left C. Tongue deviates right D. Left shoulder drop E. Right shoulder drop F. Diarrhea
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Question During a routine chin lift, Dr accidentally transects the marked nerve. What symptom will his droopy-chinned patient have? A. Difficulty chewing B. Difficulty swallowing C. Tongue deviation D. Shoulder weakness E. Diarrhea
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Answer During a routine chin lift, Dr accidentally transects the marked nerve. What symptom will his droopy-chinned patient have? A. Difficulty chewing B. Difficulty swallowing C. Tongue deviation D. Shoulder weakness E. Diarrhea
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Question Dr. Garner needs a picture in order to illustrate a nerve lesion during her lecture. She finds a student asleep and severs the indicated nerve. What sign did she need to take a picture of? A. Right-sided medial eye deviation B. Left-sided medial eye deviation C. Right-sided drooping eyelid D. Left-sided drooping E. Lower face paralysis
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Answer Dr. Garner needs a picture in order to illustrate a nerve lesion during her lecture. She finds a student asleep and severs the indicated nerve. What sign did she need to take a picture of? A. Right-sided medial eye deviation B. Left-sided medial eye deviation C. Right-sided drooping eyelid D. Left-sided drooping E. Lower face paralysis
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Question What is the gross brain structure indicated by the arrow?
A. Caudate nucleus B. Globus Pallidus C. Hippocampus D. Putamen E. Thalamus
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Answer What is the gross brain structure indicated by the arrow?
A. Caudate nucleus B. Globus Pallidus C. Hippocampus D. Putamen E. Thalamus
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Question From whence do most of the neurons in the marked structure come? A. Left red nucleus B. Right red nucleus C. Left pontine nuclei D. Right pontine nuclei E. Left lower limb F. Right lower limb G. Left fastigial nucleus H. Right fastigial nucleus
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Answer From whence do most of the neurons in the marked structure come? A. Left red nucleus B. Right red nucleus C. Left pontine nuclei D. Right pontine nuclei E. Left lower limb F. Right lower limb G. Left fastigial nucleus H. Right fastigial nucleus
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Question Which lobe of the cerebrum sits in the region of the skull shown? A. Frontal B. Parietal C. Temporal D. Occipital
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Answer Which lobe of the cerebrum sits in the region of the skull shown? A. Frontal B. Parietal C. Temporal D. Occipital
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