Key findings from key papers

Question 1

location of the marginal mandibular branch of the facial nerve (include study)

Answer 1

when posterior to the facial vessels the marginal mandibular branch of the facial nerve passed ABOVE the inferior to the border of the mandible in 81% of species

when anterior to the facial vessel - passed above 100 % of the time

located in a plane DEEP to platsyma but superficial to the investing fascia and superficial to the facial vein

Question 2

SMAS?

Answer 2

superficial musculo-aponeurotic system

Question 3

Galea aponeurotica is continuous with the __ at the ___

Answer 3

temporoparietal fascia at the level of temporal crest

Question 4

TP fascia is continuous with the SMAS at the ___

Answer 4

the TO fascia is continous with the SMAS at the level of the ZYGOMA

Question 5

SMAS is continuous with the ____ at the inferior border of the mandible

Answer 5

SMAS is continuous with the platsyma / superficial cervical fascia at the inferior border of the mandible.

Question 6

Pericranium is continuous with the ____ at the level of the temporal crest

Answer 6

Pericranium is continuous with the temporalis fascia at the temporal crest

Question 7

temporalis fascia is continuous with the ____ fascia at the zygoma

Answer 7

the temporalis fascia is continuous with the parotidomasseteric fascia at the zygomac

Question 8

location of the temporoparietal fascia

Answer 8

beneath the skin and subq tissue over the temporal fossa
about 2-4 mm thick

extends from the superior temporal line to the zygomatic arch

contains temporal branch of facial nerve

blood supple from superficial temporal artery

Question 9

The parotidomasseteric fascia is continuous with the ___ at the level of the inferior border of the mandible

Answer 9

PM fascia is continuous with the superficial layer of the deep cervical fascia at the inferior border of the mandible

Question 10

layers go through to the submandibular gland

Answer 10

Skin
sub q
platsyma
superficial layer of deep cervical fascia
submandibular gland capsule
submandibular gland

Question 11

facial nerve branches

Answer 11

Temporal
Zygomatic
Buccal
Marginal mandibular
Cervicall

Question 12

location of the temporal branch of facial nerve

Answer 12

located within the temporoparietal fascia
distance between the most anterior point of the EAC and most posterior branches ranging 0.8-3.5 cm at the point it crosses the zygomatic arch
in the TP fascia superior and SMAS inferior

innervates the frontals (raising eye brow) and obicularis oculi (closng the eye)

Question 13

location of marginal mandibular branch of facial nerve

Answer 13

usually deep to platsyma in the superficial layer of deep cervical fascia
- 1-2 cm below angle of mandible when posterior to facial vessels 19% of the time

*** dingman study
marginal mandibular branch is superior to inferior border of mandible 81% of the time when posterior to the facial vessels
(hence why we stay below)

Question 14

cervical branch of facial nerve innervates?

Answer 14

innervates the platysma
- often injured in many subplatysmal dissections - often recovers