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MD4001 Anatomy > Dissection 4 > Flashcards

Dissection 4 Flashcards

1
Q

what foramen does the facial nerve emerge from the skull

A

stylomastoid foramen

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2
Q

what bone does the facial nerve travel through

A

petrous temporal

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3
Q

what is the innervation of the posterior belly of occipitofrontalis and some auricular muscles

A

posterior auricular nerve from the facial nerve

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4
Q

describe the course of the facial nerve through the parotid gland

A

enters on the posteromedial surface as two trunks which then form a plexus, this forms five main terminal branches

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5
Q

what are the terminal branches of the facial nerve

A 
temporal
zygomatic
buccal
marginal mandibular
cervical
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6
Q

which nerve is at risk in surgery of the submandibular gland

A

mandibular branch of the facial nerve as it dips below the inferior border of the mandible

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7
Q

what are the branches of the ophthalmic nerve

A 
supratrochlear
supraorbital
lacrimal
infratrochlear
external nasal
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8
Q

what are the branches of the maxillary nerve

A

infraorbital
zygomaticotemporal
zygomaticofacial

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9
Q

what are the branches of the mandibular nerve

A

auriculotemporal
buccal
mental

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10
Q

what is the sensory innervation of the skin of the posterior part of the head and neck

A

C2 and 3

greater occipital, lesser occipital and great auricular

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11
Q

describe the course of the facial artery

A

crosses the inferior border of the mandible at the anterior edge of the masseter

follows a tortuous course to the medial corner of the eye

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12
Q

what does the facial artery supply

A

upper and lower lips and the lateral side of the nose

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13
Q

describe the location of the transverse facial artery

A

originates in the parotid gland and runs along the zygomatic arch

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14
Q

what is the transverse facial artery a branch of

A

superficial temporal (supplies the lateral side of the face and scalp)

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15
Q

what is the blood supply of the anteromedial part of the scalp

A

branches of the ophthalmic (supratrochleal and supraorbital)

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16
Q

what is the blood supply to the posterior part of the scalp

A

occipital artery

17
Q

describe the facial vein

A

posterior to the facial artery

straighter course

18
Q

what is the clinical implication of the facial vein

A

connects to the pterygoid plexus of veins which drain to the cavernous sinus - danger triangle

19
Q

what does the parotid gland secrete

A

serous saliva

20
Q

what muscle does the parotid duct pierce

A

buccinators

opens into the second upper molar of the mouth

21
Q

what are the two potential spaces for blood in the scalp

A

below the skin, dense connective tissue and aponeurosis (subaponeurotic)

below the periosteum

22
Q

what is ecchymosis

A

bruising

23
Q

what is a cephalhaematoma

A

collection of blood between the skull and the periosteum

24
Q

what muscle opens the mouth

A

lateral pterygoid

25
Q

what is the motor supply to the muscles of mastication

A

V2 (masseter, temporalis, lateral and medial pterygoid)

26
Q

what does the epicranial aponeurosis attach to

A

temporalis facial laterally and occipitofrontalis anteriorly

27
Q

what is the nerve supply to occipitalfrontalis frontal belly

A

temporal branch of facial nerve

28
Q

what is the nerve supply to occipitalfrontalis occipital belly

A

posterior auricular branch of facial nerve

29
Q

what muscle does orbicularis oculi merge with

A

occipitofrontalis

30
Q

what are the three parts of orbicularis oculi

A

orbital
palpebral
lacrimal (attached to the lacrimal sac)

31
Q

what is the nerve supply to orbicularis oculi

A

temporal and zygomatic branches of the facial nerve

32
Q

where is the posterior part of the buccinators muscle

A

deep to the ramus of the mandible

merges with the superior constrictor muscle of the pharynx

33
Q

what is the nerve supple to buccinator

A

buccal branch of facial (muscle of facial expression)

34
Q

what muscle does the anterior part of buccinators merge with

A

orbicular oris

35
Q

what are the dilator muscles of the mouth

A

levator labii superioris alequae nasii
zygomaticus minor and major
risorius

(facial artery and vein lies deep to them)

36
Q

what is the nerve supply to the dilators of the mouth and orbicularis oris

A

buccal and mandibular branches of the facial nerve

37
Q

what is the nerve supply to platysma

A

cervical branch of facial

MD4001 Anatomy (45 decks)

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