Anatomy Head And Neck 02

Front 1

intracranial irritation of the glossopharyngeal nerve can cause bouts of excruciating pain seeming to emanate from structures it innervates. Name the structures whose pain sensation is served by CN IX.

Back 1

posterior 1/3 tongue
pharynx
auditory tube
middle ear
mastoid air cells

Front 2

the glossophyarngeal nerve also carries nonsensory visceral afferent information. Name a structure from which this emanates and describe one clinically significant procedure based on this knowledge

Back 2

carotid sinus
during carotid surgery, one injects anesthesia in vicinity of the carotid sinus so that re-established blood flow is not misperceived as hypertension, which would cause a response that lowers blood pressure

Front 3

how does the shape of the eyeball or any of its components change when you try to look at an object close to your face?

how are these shape changes produced, and which cranial nerves participate?

Back 3

a) lens becomes rounder
b) pupil constricts

a) tension in suspensory ligament is relaxed by contraction of ciliary m.
b)constrictor pupillae contracts

both produced by oculomotor n.

Front 4

possible unilateral nervous system injuries. what, if any, effect with they have on breathing and why?
a) vagus n. at the level of the thyroid cartilage
b) phrenic nerve at the level of the thyroid isthmus
c) internal laryngeal nerve at the level of the tip of the greater horn of the hyoid bone
d)external laryngeal nerve at the level of the cricothyroid membrane
e) spinal cord at the level of cricoid cartilage
f)recurrent laryngeal nerve at the level of the inferior pole of the thyroid gland lobe.

Back 4

a)causes one cord to become para median because all internal laryngeal muscles are paralyzed. Effect is exertional dyspnea
b)causes one hemidiaphragm to be paralyzed. Effect is highly variable, from none to dyspnea at rest
c)no effect on breathing
d)no effect on breathingc
e) no effect on breathing
f) same as a

Front 5

J.J. receives a transverse wound to the scalp. Identify three problems that might arise if it goes through the galea aponeurotic that will not arise if it stays superficial to the galea

Back 5

a)bleeding will be more profuse
b)an infection can spread throughout subaponeurotic space
c) an infection in subaponeurotic space can enter cranial cavity through emissary foramina

Front 6

provide an anatomical explanation for why children with uncorrected clefts in the soft palate are more likely to have middle ear infections?

Back 6

in the cleft palate the tensor veli palatini muscles have no fixed point of insertion so they become less effective at opening auditory tubes

Front 7

if a person with bell's palsy expresses concern that they now have difficulty understanding conversations at a noisy party, what explanation can you provide?

would a rinne test on such a person be normal? why?

Back 7

the stapedius must be paralyzed. It dampens low frequency sounds. if these are not dampened, speech discrimination is more difficult.

yes, air conduction will still be superior to bone conduction

Front 8

visual field in person whose left optic tract is damaged?

visual field in person whose optic chiasm is injured?

Back 8

can't see on right side

limited peripheral vision

Front 9

what do branches of the ansa cervicalis do?

what is the relationship to the superior and inferior limbs of the ansa to the carotid sheath and its contents?

Back 9

innervate infrahyoid strap muscles

superior limb is embedded in anterior wall of the carotid sheath between carotid a. and IJV.

Inferior limb either crosses lateral aspect of sheath or pierces it, passing between carotid a. and IJV.

Front 10

in the posterior wall of the tympanic cavity, inferior to the aditus ad antrum

Back 10

facial n.

Front 11

in the medial wall of tympanic cavity superior to the footplate of the stapes air sinus

Back 11

facial n

Front 12

in the superior wall of the maxillary

Back 12

infraorbital n., a., v.

Front 13

inferior to the maxillary air sinus

Back 13

teeth

Front 14

fused prematurely in trigonocephaly

Back 14

metopic suture

Front 15

separating the cerebellum from the cerebrum

Back 15

tentorium cerebelli

Front 16

in the space between the lens and the retina

Back 16

vitreous

Front 17

anterior to the middle portion of the sigmoid sinus

Back 17

mastoid air cells

Front 18

when you palpate the anterior fontanelle of an infant, what are you hoping to learn about? Explain what each observation signifies.

Back 18

a)rate of sutural closure- if impalpable before 4 or 5 months, sign of craniostynosis
b)intracranial pressure (if bulging, pressure is elevated)
c)hydration (if sunken, child is dehydrated)
d)nutrition- if fontanelle is palpable much past a year, may be malnourished

Front 19

what is the function of arachnoid villi? (granulations?)

Back 19

CSF passes through them into venous system

Front 20

describe the best location for an emergency entry to the airway of a choking person

Back 20

in median plane between cricoid and thyroid cartilages

Front 21

subsequent to a facial bone injury, R.M's left nasolacrimal duct becomes scarred and closed. He develops an abscess of his lower eyelid adjacent to the medial canthus. What is the most likely explanation?

in order to circumvent the blocked duct by establishing a connection between the lacrimal sac and nasal cavity, you will break through a suture between two cranial bones. which ones?

Back 21

infected lacrimal canaliculus

lacrimal and maxillary