Anatomy

Question 1

What important structure sits on the body of the sphenoid?

Answer 1

pituitary

Question 2

What is directly behind the superior orbital fissure?

Answer 2

cavernous sinus

Question 3

V2 passes through…

Answer 3

Infraorbital foramen

Question 4

Mental foramen vs mandibular foramen

Answer 4

The mental foramen is on the anterior mandible and allows for the inferior alveolar vessels and nerve to exit renamed “mental ____” The mandibular foramen is on the inside of the angle of the rammus and is where the inferior alveolar nerve and vessels enter the mandible

Question 5

The lingual and inferior alveolar are branches of which nerve and transmit what?

Answer 5

Branches of V3, transmit sensory

Question 6

What separates the anterior and middle cranial fossa? Middle and posterior?

Answer 6

Anterior->lesser wing of sphenoid->Middle->petrous ridge->posterior

Question 7

Crainial nerve exits?

Answer 7

1-cribiform plate 2- optic canal 3-SOF 4- SOF V1-SOF V2-Ro2ndum V3- Ov3ale 6- SOF 7-Internal acoustic meatus 8-Internal acoustic meatus 9- Jug 10-Jug 11-Jug/ foramen magnum 12- Hypoglosal

Question 8

Where does the internal carotid enter the skull and what does it pass through?

Answer 8

Enters through carotid canal, enters middle CF through foramen lacerum

Question 9

What does the chorda tympani pass through and what does it join after?

Answer 9

Chorda tympani passes through petrotympanic fissure and joins lingual n.

Question 10

The lingual nerve is lateral to what?

Answer 10

Medial pterygoid

Question 11

The anterior cranial fossa contains… The posterior CF contains… The middle CF contains…

Answer 11

Anterior-Frontal Posterior- Cerebellum Middle- everything

Question 12

Frontal lobe fnx

Answer 12

PPP Personality Planning Production of speech

Question 13

Parietal lobe fnx

Answer 13

Sensory Taste temp touch

Question 14

Temporal lobe

Answer 14

Temp House Worker Hippocampus- memory Wernickes-wordy speech Hearing and smell

Question 15

Hypothalamus

Answer 15

regulates gas-hunger radiator- temperature sky light- circadian rhythm

Question 16

Cerebellum

Answer 16

movement coordination posture

Question 17

Every cranial nerve except 1 and 2 originate

Answer 17

in the brainstem Midbrain pons medulla

Question 18

Rule of 4- cranial nerve origins

Answer 18

3,4 Midbrain 5,6,7,8 Pons 9,10,11,12 medulla

Question 19

Where do many nerve pathways cross in the brain

Answer 19

medulla

Question 20

Part of the brain that maintains autonomic fxn such as blood pressure, heart rate, breathing, vomiting…

Answer 20

Medulla oblongata

Question 21

Internal Carotid artery branches- OPAM

Answer 21

Ophthalmic Posterior communicating Anterior cerebral Middle cerebral

Question 22

Where does the carotid bifurcate into ICA and ECA?

Answer 22

Superior border of thyroid cartilage

Question 23

Contents of cavernous sinus

Answer 23

3, 4, 6, V1, V2

Same as superior orbital fissure+ Ro2ndum

V3 and 7 do not go through

ICA and 6 travel through middle

Question 24

Layers of scalp

Answer 24

First 3 fused

Skin

CT- vascular

Aponeurosis Epicranialis

Loose areolar Tissue

Paricranium

Question 25

Which cranial nerve crosses over?

Answer 25

Trochlear-contralateral innervation all others ipsi

Question 26

Whne you gag CN\_ controls the sensory and CN\_ controls the motor

Answer 26

Senosry-9 Motor-10

Question 27

Path of bright light being seen then constricting pupils

Answer 27

Light seen with CN 2 optic nerve. Nerve fibers go to Pretectal where they synapse and tell **E**denger **W**estfall to constrict. Fibers from E.W. go to the ciliary ganglion which then synapse with the eye (miosis/accomidation)

Question 28

What muscle supplies intorsion of the eye?

Answer 28

Superior oblique-trochlear CN4

Question 29

TMJ is innervated by which nerve

Answer 29

auriculotemporal of mandibular V3

Question 30

Divisions of V1

Answer 30

NFL Nasocilliary Frontal-Sup orbit, trochlear Lacrimal

Question 31

Auriculotemporal N, Lingual, and Inferior alveolar N all are from

Answer 31

V3

Question 32

Upper vs lower motor lesion/problem on CN7

Answer 32

Upper lesion(supranuclear) is a stroke which causes ipilateral paralysis of lower face Lower lesion(stylomastoid foramen) will cause ipsilateral paralysis of upper and lower face(worse)

Question 33

A lesion at the petrotympanic fissure would sever what and cause what

Answer 33

Sever sensory of chorda tympani and cause taste loss (aguesia)

Question 34

only motor action of CN9

Answer 34

stylopharyngeus mm

Question 35

This nerve loops areound the subclavian on the right side and the aorta on the left

Answer 35

Recurrent laryngeal nerve of CNX

Question 36

CNX inervates all mm of the pharynx and soft palate except...

Answer 36

stylopharyngeus(CN9) and Tensor Veli Palatini(V3)

Question 37

The hypoglossal nerve inervates all mm of the tongue except...

Answer 37

palatoglossus(vagus)

Question 38

Thoracolumbar vs craniosacral

Answer 38

Thoracolumbar is the sympathetic outflow of CNS Craniosacral is parasympathetic outflow of CNS

Question 39

Lesion at the pterygopalatine foramen would sever what and cause what

Answer 39

sever CN7 greater petrosal and prevent lacrimal/nasal secretions

Question 40

Nerve that travels between the otic ganglion and inferior salvitory nucleus

Answer 40

lesser petrosal of CN9 after otic, hitch hikes on auriculotemporal of V3 and innervates parotid

Question 41

The atlantoa-occipital joint allows for what motion

Answer 41

yes

Question 42

tlanta axial joint allows for what motion

Answer 42

no

Question 43

Bones on Roof of orbit Bones of Medial wall Lateral Floor

Answer 43

_Roof_**- F**ront-**L**ess(er wing of sphenoid) _Medial_: SMEL: **S**phenoid, **m**axillary, **e**thmoid, **l**acrimal _Lateral_- Great-Z (**g**reater wing and **z**ygomatic) **M**y **P**al gets his **Z**zss on the _Floor_ (Max, Pal, zygo)

Question 44

All superior mm (of eye)... All obliques... All inferiors...

Answer 44

Intort Superior rectus & Superior oblique All obliques abduct All inferior extort

Question 45

The semi-circular canals detect _______ acceleration while the vestibule detects \_\_\_\_\_\_\_

Answer 45

Semi-circular-angular acceleration vestibule-linear acceleration

Question 46

All superior mm (of eye)... All obliques... All inferiors...

Answer 46

Intort Superior rectus & Superior oblique All obliques abduct All inferior extort

Question 47

Cranial nerve effects the malleus Stapes?

Answer 47

Malleus- tensor tympani- CN5 V3 Stapes-stapedius CN7

Question 48

Branches of the subclavian artery

Answer 48

VIT CD Vertebral Internal thoracic Thyrocervical Costocervical Dorsal scapular artery