Exam 4

Question 1

where does the pituitary sit

Answer 1

sella turcica of sphenoid bone

Question 2

positioning of pituitary gland

Answer 2

behind bridge of nose
below hypothalamus and optic chiasm
between carotid arteries

Question 3

epidural hematomas involve what type of blood?

Answer 3

arterial

Question 4

what type of injury commonly proceeds epidural hematomas?

Answer 4

skull fx

Question 5

shape of epidural hematoma on CT

Answer 5

lens shaped

Question 6

subdural hematomas involve what type of blood?

Answer 6

venous

Question 7

what 2 layers are subdural hematomas between?

Answer 7

dura and arachnoid mater

Question 8

what type of injuries commonly proceed subdural hematomas?

Answer 8

fall or blow to the head–> tears bridging veins

Question 9

shape of subdural hematoma on CT

Answer 9

crescent shape

Question 10

what type of hematoma CAN cross sutures?

Answer 10

subdural

Question 11

epidural hematomas are referred to as ______ since they do not cross sutures

Answer 11

lentiform

Question 12

this drains blood from the brain and face and drains into the pterygoid plexus

Answer 12

cavernous sinus

Question 13

what is the MC orbital fx?

Answer 13

blow out fx- specifically floor fx

Question 14

list 3 major arteries to the thyroid

Answer 14

superior thyroid artery
inferior thyroid artery
thyroid IMA

Question 15

the superior thyroid artery is a branch of what major vessel?

Answer 15

external carotid

Question 16

the inferior thyroid artery is a branch of what major vessel?

Answer 16

thyrocervical trunk

Question 17

the thyroid ima artery is a branch of what vessel?

Answer 17

subclavian artery

Question 18

why is there such extensive anastomoses in the thyroid?

Answer 18

ensures collateral flow between subclavian and external carotids

Question 19

this dural infolding separates the L and R hemispheres of the cerebrum

Answer 19

cerebral falx

Question 20

what 2 sinuses does the cerebral falx form?

Answer 20

superior and inferior sagittal sinuses

Question 21

this dural infolding separates the occipital lobes from the cerebellum

Answer 21

cerebral tentorium

Question 22

where is the retropharyngeal space located between?

Answer 22

behind pharynx and esophagus
in front of prevertebral muscles

Question 23

infection of retropharyngeal space typically won’t spread if it’s located where?

Answer 23

between investing layer and muscular part of pretracheal fascia

Question 24

infection of the retropharyngeal space will spread to the thorax if located here

Answer 24

between investing fascia and visceral fascia of pretracheal fascia

Question 25

retropharyngeal abscess here will lead to a bulge posterior to SCM and may lead to pneumomediastinum

Answer 25

posterior to prevertebral layer of deep fascia

Question 26

what 4 vessels form kiesselbach plexus?

Answer 26

ethmoid artery sphenopalatine artery greater palatine artery superior labial artery

Question 27

where does the olfactory nerve exit?

Answer 27

cribriform plate

Question 28

where does the optic nerve exit?

Answer 28

optic canal

Question 29

where does the oculomotor nerve exit?

Answer 29

superior orbital fissure

Question 30

where does the trochlear nerve exit?

Answer 30

superior orbital fissure

Question 31

where does the trigeminal nerve exit?

Answer 31

superior orbital fissure foramen rotundum foramen ovale

Question 32

where does the abducens nerve exit?

Answer 32

superior orbital fissure

Question 33

where does the facial nerve exit?

Answer 33

internal acoustic meatus

Question 34

where does the vestibulocochlear nerve exit?

Answer 34

internal acoustic meatus

Question 35

where does the glossopharyngeal nerve exit?

Answer 35

jugular foramen

Question 36

where does the vagus nerve exit?

Answer 36

jugular foramen

Question 37

where does the accessory nerve exit?

Answer 37

jugular foramen

Question 38

where does the hypoglossal nerve exit?

Answer 38

hypoglossal canal

Question 39

smell

Answer 39

CN1

Question 40

sight

Answer 40

CN2

Question 41

EOM opens eye pupillary constriction and accommodation

Answer 41

CN3

Question 42

superior oblique--> eye down and in

Answer 42

CN4

Question 43

mastication opens mouth

Answer 43

CN5

Question 44

lateral eye movement via lateral rectus

Answer 44

CN6

Question 45

tear and saliva excretion taste

Answer 45

CN7

Question 46

hearing and balance

Answer 46

CN8

Question 47

taste

Answer 47

CN9

Question 48

swallowing chemo and baroreceptors

Answer 48

CN10

Question 49

shrugs shoulders via SCM and trapezius

Answer 49

CN11

Question 50

tongue movement via intrinsic and extrinsic tongue muscles

Answer 50

CN12

Question 51

what nerve innervates anterior 2/3 of tongue and stapedius of external ear

Answer 51

CN7

Question 52

what nerve innervates the posterior 1/3 of the tongue?

Answer 52

glossopharyngeal

Question 53

what nerve innervates the soft palate?

Answer 53

CN10

Question 54

which nerve innervates the eustachian tube, carotid body and sylopharyngeus?

Answer 54

CN9