# USMLE Step 1 Review/Anatomy
#### LOCATION OF THORACIC DUCT

* The duck is between two geese (duck = thoracic duct)
* 2 geese = azyGOUS and esophaGUS

#### BRACHIAL PLEXUS

Roots, Trunks, Divisions, Cords, Branches:
--> Radical Teachers Drink Cold Beers
* Randy Travis Drinks Cold Beers.
* Robert Taylor Drinks Cold Beer.
* Red Trucks Drive Cats Nuts.
* Read The Damn Cadaver Book.
* Real Texans Drink Cold Beer.

#### ATTACHMENTS OF CHEST MUSCLES

* A lady between two majors.
* Pectoralis major attaches to lateral lip of bicipital groove.
* Teres major attaches to medial lip of bicipital groove.
* Latissimus dorsi attaches to the floor of bicipital groove.
* The "lati" is between two "majors."
* "Lateral is less, medial is more."
* Lateral pectoral nerves goes through pectoralis major while medial pectoral nerve goes though both pectoralis major and minor

#### CRANIAL NERVES

I - olfactory, II - optic, III - oculomotor, IV - trochlear, V - trigeminal, VI - abducens, VII - facial, VIII - acoustic (vestibulocochlear), IX - glossophrayngeal, X - vagus, XI - accessory, XII - hypoglossal
* On Old Olympus Towering Tops, A Finn And German Viewed Some Hops
* Oh Once One Takes The Anatomy Final, Very Good Vacations Are Had
* Our Only Object To Touch And Feel Virgin Girls Vagina And Hymen-----is to learn cranial nerve names.
* You have I nose. You have II eyes. (I - Olfactory; II - Optic)
--> Some Say Marry Money But My Brother Says Big Boobs Matter Most (Sensory, Motor, and Both) Sammy Sosa Makes Money But My Brother Says Barry Bonds Makes More
* OLd OPie OCasionally TRies TRIgonometry And Feels Vague GLOomy And HYPOactive (letters in capital have similar in CN's.)
* On Occasion Of Trader's Tea, Attractive Faces Are Girl Visitors. Say Hi.
* Choirs Of Silly Singers Sing Rhyms Out Side In Imertinent Jollienss Joyfully Jogging Home (to remember exits of cranial nerves (+2 for the 3 branches of CN:V)
* Oh Oh Oh To Touch And Feel Various Girls Very Attractive Hair(Cranial Nerves)
* Oh Oh Oh To Touch And Feel A Girl's Vagina, AH! (Cranial Nerves)
* On Occasion Our Trusty Truck Acts Funny - Very Good Vehicle Any-How
* Oh Once One Takes The Anatomy Final Very Good Vacations Are Heavenly

#### Deep Reflexes

Biceps (C5-6) elbow flexion
Brachio-radialis (C5-6) elbow flexion & supination
Triceps (C7) elbow extension
Patellar (L3-4) knee extension = knee jerk
Achilles (S1) plantar flexion = ankle jerk

## LR6 SO4 R3

* LR6 - Lateral Rectus --> CN VI Abducens
* SO4 - Superior Oblique --> CN IV Trochlear
* R3 - The Remaining 4 eyeball movers --> CN III Occulomotor
* or LAST: LA = Lateral Rectus - Abducens Nerve, ST = Superior Oblique - Trochlear Nerve

#### BRANCHES OF FACIAL NERVE

Temporal, Zygomatic, Buccal, Mandibular, Cervical
* Two Zebras Bought My Car
* Two Zebras Bit My Cookie
* To Zanzibar By Motor Car
* Ten Zulus Buggered My Cat
* To Zionsville By Max's Car
* Tappan Zee Bridge May Close
* Two Zombies Bit My Cranium

#### CERVICAL SPINAL NERVES

* c345 keep the diaphragm alive (innervation of diaphragm by the phrenic nerve)
* c5-6-7 raise your arms to heaven (nerve roots of long thoracic nerve innervate serratus anterior and if severed you see "winging" of the scapula)

#### INNERVATION OF PENIS

* Parasympathetic causes erection. Sympathetic causes ejaculation. "Point and Shoot."
* "S2, 3, 4 keep the penis off the floor"
* Innervation of the penis by branches of the pudendal nerve, derived from spinal cord levels S2-4

#### AORTIC BRANCHES

* ABC'S
* Aortic arch gives off the Brachiocephalic trunk, the left Common Carotid, and the left Subclavian artery

#### Order of things in the Femoral Triangle

* "N(AVEL)" (From Lateral To Medial)
* Nerve, Artery, Vein, Empty space, Lymphatics
NOTE: Parenthesis includes things contained in the femoral sheath.
LOCATION OF INQUINAL HERNIAS with Reference to the Inferior Epigastric Arteries:
* "MDs don't LIe" (Medial- Direct, Lateral - Indirect): Direct inquinal hernias are Medial while Indirect hernias are Lateral to the inferior epigastric arteries
Addendum Module: More Through Anatomy Notes - This page is just temporary until the additional information in that page can be better organized over multiple chapters/sections along with the rest of this book.