Parotid Gland

Question 1

Nerve which passes through the parotid gland?

Answer 1

The Facial nerve forming the superficial and deep lobes

Question 2

The duct which the parotid gland releases into? pierces which muscle? course? location in oral cavity?

Answer 2

Stensen’s duct
Buccinator
Runs superficial to masseter
Opposite maxillary 2nd molar

Question 3

Parotid lymphatics - drains to?

Answer 3

Superficial and deep cervical nodes

Question 4

What do preauricular nodes drain?

Answer 4

Temporal scalp
Upper face
Anterior pinna

Question 5

Lymph nodes with in the PG drain which structures?

Answer 5

Parotid
Nasopharynx
Palate
Middle ear
EAM

Question 6

Parasympathetic innervation of the parotid gland - pre and post-ganglionic?

Answer 6

Preganglionic from glossopharyngeal arrives at otic ganglion via lesser petrosal nerve
Postganglionic leaves otic ganglion an distributes to the parotid gland via auriculotemporal

Question 7

Sympathetic innervation of the parotid gland?

Answer 7

Postganglionic innervation via superior cervical ganglion via the arterial system

Question 8

Greater auricular nerve association with the parotid gland?

Answer 8

Crosses the external jugular vein near the PG

Surgery influence

Question 9

Veins, Arteries, Nerves and Muscles related to the deep lobe of the PG?

Answer 9

V: internal jugular
A: external and internal carotid
B: IX, X, XI, XII
S: styloglossus and stylohyoid muscle

Question 10

Function of the facial nerve?

Answer 10

Purely motor and supplies the muscles of facial expression

Question 11

Nervus intermedius - assoc with facial?

Answer 11

Carries parasympathetic (visceral motor), general sensory and taste (special sensory)

Question 12

Facial nerve branches at the PG?

Answer 12

Temporal - temple
Zygomatic - zygomatic arch
Buccal - buccal mucosa
Marginal mandibular - mandible
Cervical - neck

Question 13

Facial nerve supplies before entering PG?

Answer 13

Stapedius
Occipitofrontalis
Posterior belly of Digastric and Stylohyoid

Question 14

Nervus intermedius - parasympth? greater petrosal? chorda tymapni?

Answer 14

Parasymph:
- all secretory glands of head and neck (except PG)
Greater Petrosal:
- supplies nasal glands and lacrimal gland
Chorda Tympani:
- supplies submand and sublingual glands
- anterior 2/3 of tongue

Question 15

Emissary veins pass in the loose areolar tissue - cut?

Answer 15

Can cause gape and increased bleeding

Question 16

Scalp infection - venous problems?

Answer 16

Leads to intracranial venous sinus thrombosis