scalp, face and parotid Flashcards Preview

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Flashcards in scalp, face and parotid Deck (20):
1

layers of scalp

skin
connective tissue (dense)
aponeurotic layer
loose CT
pericranium

2

arteries supplying the scalp

branches of external carotid

ophthalmic artery (branch of internal carotid)
-supra-orbital branch
-supratrochlear

3

innervation of the scalp

CNV = trigeminal

cervical nerves C2 & C3

4

muscles in facial expression

platysma

occipitofrontalis

auricularis muscles

orbicularis oculi (orbital & palpebral)

5

what nerve innervates the muscles involved in facial expression

facial nerve (CNVII)

6

location of parotid gland

superior portion sits on top of the ramus of the mandible bone below the zygomatic arch and sits on masseter muscle

7

course of parotid duct

leaves the anterior border of the gland and crosses the face in a transverse course over masseter muscle. at the anterior border of masseter muscle, it turns deeply into buccinator fat and pierces the buccinator muscle. It opens into the oral cavity near the second upper molar tooth

8

sensory innervation of parotid gland

V3

9

branches of maxillary nerve

zygomaticotemporal

zygomaticofacial

infra-orbital nerve

10

branches of mandibular nerve

auriculotemporal

buccal nerve

mental nerve

11

2 main facial nerve branches and subbranch

temporozygomatic
- temporal

cervicofacial
- marginal mandibular

12

5 main branches of facial nerve

temporal

zygomatic

buccal

marginal mandibular

cervical

13

course of facial nerve

-runs between mastoid process and styloid process
-penetrates the parotid gland between the superficial and deep parts and then crosses superficial to retromandibular vein, external carotid artery, mandibular and the masseter muscle

14

surface anatomy of parotid duct

found in the middle 3rd of a line between lower border of tragus and cheilion
it runs within 1.5cm of this line

15

what is the main muscle that supplies the nose

nasalis

16

buccinator muscle

- forms laterals of the oral cavity
- innervated by facial nerve
- parotid duct perforates this muscle

17

what sensory nerve innervates the neck

cervical plexus
anterior = transverse cervical

18

sensory innervation of parotid fascia

C2

19

parasympathetic fibres supplying parotid gland/duct

glossopharyngeal

20

sympathetic fibres supplying parotid gland/duct

superior cervical ganglion from external carotid artery