¨ Cranial Nerves
I-optic, II-olfactory, III-oculomotor, IV-trochlear, V-trigeminal, VI-abducens, VII-facial, VIII-acoustic (vestibulocochlear), IX-glossophrayngeal, X-vagus, XI-spinal accessory, XII-hypoglossal
On Old Olympus Towering Tops, A Finn And German Viewed Some Hops
You have I nose. You have II eyes. (I – Olfactory; II – Optic)
Motor and Sensory nerves
Some Say Marry Money, But My Brother Says Big Bras Matter More
¨ Innervation of Extraocularmotor Muscles
LR6 (SO4) 3
LR6--Lateral rectus--> VI abductens
SO4--Superior Oblique--> IV Trochlear
3--The remaining 4 eyeball movers = III
¨ Branches of Facial Nerve after Stylomastoid foramen
From superior to inferior:
Ten Zebras Bought My Car
To Zanzibar By Motor Car
Temporal, Zygomatic, Buccal, Masseteric, Cervical
PAssing Through Zanzibar By Motor Car (PA for Posterior Auricular).
Ten Zulus Buggered My Cat (PAinfully)
(Posterior auricular nerve)
¨ Cervical Spinal Nerves
C3-4-5 keeps the phrenic alive (innervation of phrenic nerve)
C3-4-5 keep the diaphragm alive (innervation of diaphragm)
C5-6-7 raise your arms to heaven (nerve roots of long thoracic nerve innervate serratus anterior)
¨ V3 innervated muscles
My A$$ Meets The Toilet
Mylohyoid Anterior digastric Muscles of Mastication
Tensor veli palatini Tensor tympani
¨V3: sensory branches
"Buccaneers Are Inferior Linguists"
Inferior alveolar Lingual
¨ Lacrimal nerve course
Lacrimal's story of 8 L's
Lacrimal nerve runs on Lateral wall of orbit above Lateral rectus, then Lets communicating branch join in, then supplies Lacrimal gland, then Leaves it and supplies Lateral upper eye Lid!
¨ CN VII innervated muscles (branchial arch 2 derivatives)
"Imagine someone making the facial expression to say 'PSS...'
Facial expression muscles:
Posterior belly of digastric
¨ Scalp: nerve supply
Greater occipital/ Greater auricular
¨ Cranial bones
PEST OF 6
Parietal Ethmoid Sphenoid Temporal Occipital Frontal
The 6 just reminds that there's 6 of them to remember.
Old Pygmies From Thailand Eat Skulls
Old People From Texas Eat Spiders
Occipital Parietal Frontal Temporal Ethmoid Sphenoid
Prostitutes Offer Free Sex To Everyone
Parietal Occipital Frontal Sphenoid Temporal Ethmoid
¨ Orbit: bones of medial wall
My Little Eye Sits in the orbit
Maxilla (frontal process)
¨ Foramen spinosum
location on base of skull Foramen spinosum is adjacent to the spine of sphenoid.
¨ Cavernous sinus contents
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.
¨ Cartilage derivatives of 1st pharyngeal arch (mandibular)
I'M A Super Sexy Guy (or Girl)
Anterior ligament of malleus
Spine of sphenoid
Genial tubercle of mandible
¨ Face muscles groups cranial innervation
Mandibular nerve: Mastication.
Facial nerve: Facial expression.
¨ Pterygoid muscles
Function of lateral vs. medial
"Look at how your jaw ends up when saying first syllable of 'Lateral' or 'Medial' ":
"La": your jaw is now open, so Lateral pterygoid opens mouth.
"Me": your jaw is still closed, so Medial pterygoid closes the mandible.
¨ Eye rotation by oblique muscles
I Love S&M
Inferior oblique: Lateral eye rotation
Superior oblique: Medial eye rotation
Extrinsic muscles of tongue [for pro soccer fans] "Paris St. Germain's Hour":
· PSG is a French soccer team (foreign), hence extrinsic comes to mind.
Maxillary artery branches
"DAM I AM Piss Drunk But Stupid Drunk I Prefer, Must Phone Alcoholics Anonymous":
Posterior superior alveolar
Middle superior alveolar
Anterior superior alveolar
Artery of the pterygoid canal
¨ Subclavian artery branches
Very Tired Individuals Sip Strong Coffee Served Daily
¨ External carotid artery branches
Some Aggressive Lovers Find Odd Positions More Stimulating
Sister Lucy's Powdered Face Often Attracts Silly Medicos
So Long For Acting Old Parenting Means Stability
Sally Ate Lots Of Fresh Produce March Through September
¨ Cervical plexus
arrangement of the important nerves "GLAST"
4 compass points: clockwise from north on the right side of neck:
Great auricular (North) à Lesser occipital (East) à Accessory nerve (pops out between L and S) à Supraclavicular (South) à Transverse cervical (West)
¨ Thoracic Duct Location
The duck is between two gooses (duck = thoracic duct)
2 gooses = azyGOUS and esophaGOUS
¨ Carotid sheath contents "I See 10 CC's in the IV":
I See (I.C.) = Internal Carotid artery
10 = CN 10 (Vagus nerve)
CC = Common Carotid artery
IV = Internal Jugular Vein
Hyoid bone: muscle attachments
Christ, He Didn't Screw Girls Much. That's Obvious, Stupid
The first sentence is for 6 muscles attaching superiorly, the second sentence is for 3 muscles attaching inferiorly. Both sentences are in order from lateral to medial: