Parotid, Submandibular and Sublingual Glands

Question 1

What is in serous saliva?

Answer 1

Amylase

Lysozyme

Question 2

What is in mucous saliva?

Answer 2

Sialomucins

Question 3

What type of saliva does the parotid gland secrete?

Answer 3

Serous

Question 4

Where does the parotid duct enter the oral cavity?

Answer 4

Near upper 2nd molar tooth

Question 5

Which muscle does the parotid duct pierce?

Answer 5

Buccinator

Question 6

Which cranial nerve supplies the parotid gland?

Answer 6

CN IX (glossopharyngeal)

Question 7

Describe the PNS innervation of the parotid gland

Answer 7

Preganglion fibres from CN IX travel to otic ganglion in tympanic nerve and lesser petrosal nerve
Postganglionic fibres pass to auriculotemporal nerve (CN V3) that sends branches to parotid gland

Question 8

Where is the SNS innervation of the salivary glands gland derived from?

Answer 8

Superior cervical ganglion and nerve plexus on ECA

Question 9

What is the effect of the SNS on the salivary glands?

Answer 9

Vasoconstriction

Reduction in volume of saliva

Question 10

Name the neurovascular structures within the parotid gland

Answer 10

Retromandibular vein
External carotid artery
CN VII
Parotid lymph nodes

Question 11

Which nerves provide sensation over the parotid gland?

Answer 11

CN V3 - auriculotemporal

C2, 3 - great auricular

Question 12

What type of salvia is produced by the submandibular gland?

Answer 12

Mixed serous and mucus

Question 13

Where do the submandibular ducts open into?

Answer 13

3 orifices beside base of frenulum

Question 14

What type of saliva is produced by the sublingual gland?

Answer 14

Mucous

Question 15

Where is the sublingual gland?

Answer 15

Floor of mouth between mandible and hyoglossus (sublingual fossa of mandible)

Question 16

Where do the sublingual ducts open into?

Answer 16

Lots of ducts open into crest of sublingual fold

Question 17

Describe the PNS supply of the submandibular and sublingual glands

Answer 17

Preganglion fibres travel to submandibular gangion from the chorda tympani (CNVII nervus intermedius) and lingual nerve
Postganglionic fibres travel in lingual nerve to glands

Question 18

Name the minor salivary glands of the oral cavity

Answer 18

Buccal
Palatine
Lingual
Labial

Question 19

Describe the PNS supply of the minor salivary glands above the oral fissure

Answer 19

Preganglionic parasympathetic fibres travel to the pterygopalatine ganglion in the greater petrosal nerve (CN VII nervus intermedius)
Postganglionic fibres travel to the palate via the palatine nerves

Question 20

Describe the PNS supply of the minor salivary glands below the oral fissure

Answer 20

• Preganglionic parasympathetic fibres travel to the submandibular ganglion from the chorda tympani (CN VII nervus intermedius) & via the lingual nerve (CN V3)
• Postganglionic parasympathetic fibres then travel in the lingual nerve (CN V3) to the glands

Question 21

Which gland is susceptible to salivary stones?

Answer 21

Submandibular

Question 22

What is the most common parotid gland tumour?

Answer 22

Pleomorphic adenoma

Question 23

Which virus typically infects the parotid gland?

Answer 23

Mumps