Parotid Gland and temporal region Flashcards

1
Q

Parotid gland secretes

A

serous acini only

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what does the CT capsule and dense fibrous capsule extend as in the parotid gland

A

The stylomandibular ligament

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

where does the parotid gland travel

A

sharp medial turn to pierce buccal fat pad and buccinator to enter oral cavity at upper second molar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the terminal branches of the external carotid artery?

A

Superficial temporal and maxillary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Vein, nerve and artery present in the parotid gland?

A
Retromandibular vein
Facial nerve - splits gland into superficial and deep portions 
External carotid artery 
Also contains auriculotemporal nerve 
Great auricular nerve found below gland
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the parasympathetic secretomotor supply to the parotid gland?

A

Glossopharyngeal nerve (CN IX)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Where are the postganligionic fibres of the parotid gland from?

A

Plexus around ECA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the four muscles of mastication

A

temporalis, masseter and lateral and medial pterygoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What innervates the muscles of mastication

A

mandibular division of trigeminal (CN V3)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the main functions of the muscles of mastication

A

elevation, depression, protrusion, retrusion and lateral sliding of the mandible

Depression may be by gravity or due to force using suprahyoid muscles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Temporalis

A

Covered by temporalis facia

Temporal fossa and fascia to the coronoid process and anterior border of the ramus of the mandible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What do the anterior and superior fibres of the temporalis do?

A

elevate mandible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What do the posterior fibres of temporalis do?

A

retract the mandible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What innervates temporalis?

A

Deep temporal nerves (x2) from the anterior division of the mandibular division of the trigeminal nerve ( CN V3)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Attachment of masseter

A

Zygomatic arch to lateral aspect of the ramus of the mandible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Function of masseter

A

Elevates mandible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What innervates the masseter

A

Masseteric nerve from the anterior divison of CN V3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Attachment of lateral pterygoid

A

Upper head from infratemporal surface of great wing of sphenoid
Lower head from lateral surface of lateral pterygoid plate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Function of lateral pterygoid

A

Pulls neck of mandible forward with articulate disc (protrusion = both)

Helps with lateral chewing movements with medial pterygoid (one side)

20
Q

Lateral pterygoid is innervated by

A

nerve to lateral pterygoid - anterior divison of CN V3

21
Q

Medial pterygoid attachments

A

superficial head from tubercle of maxilla
deep head from medial surface of lateral pterygoid plate

Inserts into medial surface of angle of mandible

22
Q

Function of medial pterygoid

A

Assists in elevation

23
Q

Innervation of medial pterygoid

A

nerve to medial pterygoid from main trunk of the mandibular division of the trigeminal nerve ( CN V3)

24
Q

Movements of the mandible - Elevation

A

head of mandible and disc move backwards and head rotates on lower surface of the disk
- temporalis, masseter and medial pterygoid

25
Movements of the mandible- Depression
head of mandible rotates on undersurface of articulate disc and mandible is pulled forward -lateral pterygoid, digastric, geniohyoid, mylohyoid and gravity
26
Movements of the mandible- Protrusion
articulate disc and head of mandible move forward movement in upper part of cavity - lateral pterygoid (medial pterygoid assists)
27
Movements of the mandible- Retrusion
articulate disc and head of mandible moved backwards into mandibular fossa - posterior fibres of temporalis
28
Movements of the mandible- Lateral chewing
protrusion and retrusion combined - pterygoids
29
Part of nerve to medial pterygoid passes through
otic ganglion but no synapse | pass to tensor veli palatini and tensor tympani
30
Auriculotemporal nerve carries
postganglionic and parasympathetic fibres from otic ganglion to parotid fibres originate in CN IX glossopharyngeal
31
Lingual nerve is joined by
chorda tympani and carries parasympathetic fibres from facial nerve to submandibular (ganglion) and sublingual glands
32
Terminal branches of external carotid artery
maxillary and superficial temporal
33
Maxillary artery
arises behind neck of mandible, branches to muscles of mastication, tympanic membrane, upper and lower teeth, palate, nasal cavity, nasopharynx and meninges
34
Superficial temporal artery
smaller branch, ascends in front of auricle dividing into anterior and posterior branches which supply the skin over the frontal and temporal regions
35
Right common carotid is from
brachiocephalic branch
36
Left common carotid is from
arch of aorta
37
Posterior branches of ECA
Occipital | Posterior auricular
38
Occipital artery
close to origin of facial, crossed by hypoglossal nerve. Passes under posterior belly of digastric to enter posterior triangle. Back of scalp
39
Posterior auricular artery
level of upper border of digastric | scalp
40
Anterior branch of ECA
Superior thyroid lingual Facial
41
Superior thyroid artery
near origin, runs with external laryngeal nerve | Branch to SCM and laryngeal artery
42
lingual artery
Opposite tip greater cornu of hyoid bone, passing deep to hyoglossus, crossed by hypoglossal nerve. Oral cavity
43
Facial artery
Above tip of greater cornu, passes deep to posterior belly of digastric. Superior and inferior labial branches and angular artery to face
44
Veins of head brief
superficial temporal and facial vein
45
lymphatics of head
Deep cervical, occipital, parotid, submandibular, submental, superficial cervical