Theme 3 Quiz

Question 1

Name the bone with which the zygomatic bone articulates with posteriorly

Answer 1

Temporal bone; its zygomatic process- the two structures form the zygomatic arch

Question 2

what nerve is mental nerve a branch of

Answer 2

A branch of the inferior alveolar nerve which is itself a Br of the mandibular division of the trigeminal V3

Question 3

What would be the effect of damage to facial nerve supply

Answer 3

Function of blinking affected. Blinking spreads tears across the surface of cornea keeping it moist and free of dirt and other particles. If blinking cannot occur the surface of the cornea will dry out and dust and other foreign particles will accumulate causing ulceration, corneal opacity and ultimately blindness in the affected eye

Question 4

What is the clinical significance of the buccinator attachments in dentistry

Answer 4

Pterygomandibular raphe is a andmark for locating the inferior alveolar nerve in dental anaesthesia
Attachments are a determinant of infection spread from the teeth between the inside and outside of the oral cavity
Denture fitting- anterior attachment of the muscle

Question 5

What is the clinical significance of the attachment of levator anguli oris

Answer 5

Tissue space channels infection spread towards the corner of the eye and from there it can spread to the cranium

Question 6

What is the territory of Ophthalmic division of trigeminal

Answer 6

Skin of the middle of forehead, up to the hairline

Question 7

what does in the infraorbital nerve supply

Answer 7

skin of lower eyelid, cheek, side of the nose, the upper lip

Question 8

Which of the nerves of the cervical plexus supply a sensory innervation to part of the skin of the head?

Answer 8

Greater auricular

Question 9

name br of External carotid artery in the neck

Answer 9

Tonsillar artery and submental artery

Question 10

Name the nerve that runs with the superficial temporal artery?

Answer 10

Auriculotemporal nerve

Question 11

At which 3 points on the skin would you be able to feel a pulse

Answer 11

External carotid artery, superficial temporal artery, facial artery

Question 12

Which are the 3 main arteries that supply blood to the face

Answer 12

Which are the 3 main arteries that supply blood to the face?
Facial- inferior and superior lingual, angular artery, submental artery
Transverse facial
Br of the internal carotid artery

Question 13

Which blood vessel is related to the anterior border of the masseter?

Answer 13

Facial artery

Question 14

What is the function of the long buccal nerve

Answer 14

Sensory to the skin over the buccinator. Pierces buccinator to supply mucous membrane of the cheek, buccal sulcus and buccal gingivae of the posterior mandibular teeth from 3-4

Question 15

What is the sympathetic nerve supply to the maxillary artery?

Answer 15

Post-ganglionic axons which reach the artery from the superior cervical ganglion travelling in the walls of the external carotid arterial tree

Question 16

which muscles which must contract to allow you to smile

Answer 16

levator anguli oris, levator labii superioris, levator labii superioris alaque nasi, zygomaticus major and minor

Question 17

What is the ‘danger area’ of the face. What clinical problem might be posed by an infection in this region

Answer 17

Triangular region bounded by the nose, eye and upper lip. Infections here can spread into inferior ophthalmic veins and into cavernous sinus causing a potentially fatal condition

Question 18

how can a dental infection reach carvernous sinus

Answer 18

bacteria can leak into the sup and inf alveolar veins which feed the pulp cavities and spread to the ptergoid plexus reaching the carvenous sinus

Question 19

what is the ps innervation of parotid gland

Answer 19

preganglionic- glossopharngyeal- tympanic and lesser superficial petrosal
post gnanglionic- from otic ganglion reaching gland in auricoltemporal nerve

Question 20

what infections can occur in parotid gland

Answer 20

mumps viral infection- swelling
bacterial infection (local)- abcess

Question 21

how does temporary facial paralysis occur

Answer 21

secure anaesthesia of inferior alveolar nerve

Question 22

why is it difficult to remove a cancerous parotid gland

Answer 22

facial nerve and plexiform branches - injury can cause paralysis

Question 23

how can parotid duct become blocked

Answer 23

calcified deposits block secretions causing pain and swelling

Question 24

what are the layers of the scalp

Answer 24

skin
connective tissue
aponeursosis 
loose sup aponeurotic connective tissue 
pericranium

Question 25

what artery passes over the lateral pterygoid

Answer 25

maxillary

Question 26

what does the auriculotemporal nerve run with

Answer 26

superficial temporal artery and vein

Question 27

what are the br of V3

Answer 27

ant
- long buccal 
post
-auricoltemporal 
-lingual 
-inf alveolar--> mental nerve--> incisive nerve 
- nerve to mylohyoid

Question 28

what is the incisive nerve

Answer 28

after exiting the mandible as the mental nerve, the inf alveolar continues in the mandible as the incisive nerve