Black Eye correct answers injury to Superciliary Arches
- the supercilliary arches are relatively sharp bony ridges
**Boxing**
Lefort Fractures (1-3) correct answers LeFort 1 - horizontal fracture of maxilla
LeFort 2 - Superior orbital fissure, ethmoid, nasal bones and maxilla
LeFort 3 - Extends through the greater wings of the sphenoid and the frontozygomatic
sutures (most severe)
Fractures of the Mandible
1) Neck
2) Angle of the mandible
3) Body of the mandible correct answers 1) Neck - maybe associated with dislocation
of the TMJ on the same side
2) Angle of the mandible - usually oblique and may involve the bony socket or alveolus
of the 3rd molar tooth
3) Body of the mandible - frequently pass through a CANINE tooth
Countrecoup (counterblow) fracture correct answers No fracture occurs at the point of
impact, but one occurs on the opposite side of the cranium
What supplies blood to the calvarial bone? correct answers Middle meningeal artery
(so loss of the scalp does not produce necrosis, death of the calvarial bones)
Ecchymosis (purple patches) correct answers develop as a result of extravasation of
blood into the subcutaneous tissue and akin of the eyelids and surrounding regions
Cephalhematoma correct answers Benign condition frequently results from birth trauma
that rupture multiple minute periosteal arteries that nourish the bones of the calvaria
(bleeding between the pericranium, 5 layers and Calvaria)
Infra-Orbital Nerve Block correct answers for treating wounds of the upper lip and
cheek or, more commonly, for repairing the maxillary incisor teeth
Mental and Incisive Nerve Block correct answers Skin and mucous membrane of the
lower lip from the mental foramen to the midline, including the skin of the chin (can use
for ONE side of the skin)
Where would you do a nerve block to suture the cheek from a knife wound? correct
answers Into the mucosa covering the retromandibular fossa, a triangular depression
, posterior to the 3rd mandibular molar tooth between the anterior border of the rams and
the temporal crest
**Buccal Nerve Block**
Trigeminal Neuralgia, order of nerves affected correct answers V2 --> V3 --> V1
Trx. V2 - block infra-orbital nerve at the infra-orbital foramen by using alcohol
Herpes Zoster Infection of the Trigeminal Ganglion correct answers Ophthalmic division
most commonly affected. usually the cornea is involved, often resulting in painful
corneal ulceration and subsequent scarring of the cornea
Facial nerve (lesion near the origin of CNVII from the pons, proximal to the origin of the
greater petrosal nerve; in the geniculate ganglion) correct answers 1) Result in Motor
dysfunction ( mastication)
2) Gustatory (taste)
3) Autonomic functions (tears)
Facial Nerve (lesion distal to the geniculate ganglion, but proximal to origin of the
chorda tympani nerve) correct answers 1) Motor dysfunction ( mastication)
2) Gustatory (taste)
**No lacrimal secretion issues**
Lesion of Facial Nerve near stylomastoid foramen correct answers Loss in motor
function only
Parotidectomy may injure which nerve correct answers Facial
Paralysis of the Buccal branch of CNVII correct answers 1) paralysis of the buccinator
2) superior portion of the orbicularis iris
3) upper lip muscles
Paralysis of the marginal mandibular branch of CNVII correct answers **injury during a
surgical approach to the submandibular gland**
1) paralysis of the inferior portion of the orbicularis iris
2) Lower lip muscles
Stenosis of Internal Carotid Artery correct answers Can be overcome because of
anastomosis between facial artery (branch of the external carotid artery) and cutaneous
branches of the internal carotid artery
Cancer cells from the central part of the lower lip, the floor of the mouth, and the apex of
the tongue spread via? correct answers Submental lymph nodes
Cancer cells from lateral parts of the lower lip? correct answers Drain to the
submandibular lymph nodes
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