Dissection 4 Flashcards Preview

MD4001 Anatomy > Dissection 4 > Flashcards

Flashcards in Dissection 4 Deck (37)
1

what foramen does the facial nerve emerge from the skull

stylomastoid foramen

2

what bone does the facial nerve travel through

petrous temporal

3

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

posterior auricular nerve from the facial nerve

4

describe the course of the facial nerve through the parotid gland

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

5

what are the terminal branches of the facial nerve

temporal
zygomatic
buccal
marginal mandibular
cervical

6

which nerve is at risk in surgery of the submandibular gland

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

7

what are the branches of the ophthalmic nerve

supratrochlear
supraorbital
lacrimal
infratrochlear
external nasal

8

what are the branches of the maxillary nerve

infraorbital
zygomaticotemporal
zygomaticofacial

9

what are the branches of the mandibular nerve

auriculotemporal
buccal
mental

10

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

C2 and 3

greater occipital, lesser occipital and great auricular

11

describe the course of the facial artery

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

12

what does the facial artery supply

upper and lower lips and the lateral side of the nose

13

describe the location of the transverse facial artery

originates in the parotid gland and runs along the zygomatic arch

14

what is the transverse facial artery a branch of

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

15

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

branches of the ophthalmic (supratrochleal and supraorbital)

16

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

occipital artery

17

describe the facial vein

posterior to the facial artery
straighter course

18

what is the clinical implication of the facial vein

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

19

what does the parotid gland secrete

serous saliva

20

what muscle does the parotid duct pierce

buccinators
opens into the second upper molar of the mouth

21

what are the two potential spaces for blood in the scalp

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

below the periosteum

22

what is ecchymosis

bruising

23

what is a cephalhaematoma

collection of blood between the skull and the periosteum

24

what muscle opens the mouth

lateral pterygoid

25

what is the motor supply to the muscles of mastication

V2 (masseter, temporalis, lateral and medial pterygoid)

26

what does the epicranial aponeurosis attach to

temporalis facial laterally and occipitofrontalis anteriorly

27

what is the nerve supply to occipitalfrontalis frontal belly

temporal branch of facial nerve

28

what is the nerve supply to occipitalfrontalis occipital belly

posterior auricular branch of facial nerve

29

what muscle does orbicularis oculi merge with

occipitofrontalis

30

what are the three parts of orbicularis oculi

orbital
palpebral
lacrimal (attached to the lacrimal sac)

31

what is the nerve supply to orbicularis oculi

temporal and zygomatic branches of the facial nerve

32

where is the posterior part of the buccinators muscle

deep to the ramus of the mandible
merges with the superior constrictor muscle of the pharynx

33

what is the nerve supple to buccinator

buccal branch of facial (muscle of facial expression)

34

what muscle does the anterior part of buccinators merge with

orbicular oris

35

what are the dilator muscles of the mouth

levator labii superioris alequae nasii
zygomaticus minor and major
risorius

(facial artery and vein lies deep to them)

36

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

buccal and mandibular branches of the facial nerve

37

what is the nerve supply to platysma

cervical branch of facial