Salivary glands

Question 1

What type of saliva is the parotid gland

Answer 1

Serous - watery

Question 2

Different lobes of the parotid gland

Answer 2

Superficial, deep and glenoid

Question 3

What duct is associated with the parotid gland

Answer 3

Stensons
Emerges from the anterior edges passes through the master and pierces the buccinator and open into the mouth near U7 molar

Question 4

Secretomotor parasympathetic fibres to parotid gland

Answer 4

Glossopharyngeal synapses with otic ganglion and is then carried by auriculotemporal branch of mandibular

Question 5

Posterior border of parotid gland

Answer 5

Mastoid process and sternocleidomastoid

Question 6

Deep border of parotid gland

Answer 6

Styloid process and carotid sheath

Question 7

Superior border of parotid gland

Answer 7

Zygomatic branch

Question 8

Anterior border of parotid gland

Answer 8

Masseter muscle

Question 9

Important structures that pass through the parotid gland

Answer 9

Facial nerve
External carotid artery - ascends gives rise to the posterior auricular artery and divides into its two terminal branches
Retromandibular vein - formed in the pg by the superficial temporal and maxillary veins

Question 10

Sympathetic innervation of the parotid gland

Answer 10

Superior cervical ganglion - part of the paravertebral chain - fibres travel along ECA to parotid gland

Question 11

What type of saliva SM gland

Answer 11

Mixed gland

Question 12

Superior border of SM gland

Answer 12

Inferior border of mandible

Question 13

Anterior border of SM gland

Answer 13

Anterior belly of digastric

Question 14

Posterior border of SM gland

Answer 14

Posterior belly of digastric

Question 15

Vasculature of the SM gland

Answer 15

Submental artery

Venous drainage: facial vein and sublingual vein

Question 16

Parasympathetic innervation of SM gland

Answer 16

Innervates from superior salivary nucleus
Fibres travel via the Chorda tympani branch of the facial nerve, it then unifies with the lingual branch - synapses at the sm ganglion

Question 17

Sympathetic innervation of SM gland

Answer 17

Superior cervical ganglion

Question 18

What type of saliva is SL gland

Answer 18

Mucous

Question 19

Medial border of SL gland

Answer 19

Genioglossus muscle

Question 20

Lateral border of SL gland

Answer 20

Mandible

Question 21

Parasympathetic innervation of SL

Answer 21

Innervates from superior salivary nucleus fibres travel via the Chorda tympani branch of the facial nerve it then unifies with the lingual branch - - synapses at the sm ganglion

Question 22

Sympathetic ganglion of the SL ganglion

Answer 22

Superior cervical ganglion

Question 23

Flow rate unstimulated

Answer 23

0.25- 0.35 - mostly submandibular

Question 24

Flow rate stimulated

Answer 24

1.0 - 3.0 - mostly parotid

Question 25

2 types of acing cells

Answer 25

Mucous and serous

Question 26

What does the secretory unit consist of

Answer 26

``` Acinus - serious, mucous or mixed Myoepithelial cells Intercalated duct Striated duct Excretory duct ```

Question 27

What does the striated duct contain

Answer 27

Mitochondria | Participates in Na+ and Cl- reabsorption and K+ and HCO3- secretion

Question 28

What are serous demilune

Answer 28

Clear mucous acinar cells with flattened nuclei on the outside edge

Question 29

Epithelium of striated ducts

Answer 29

Simple columnar

Question 30

Epithelium of intercalated ducts

Answer 30

Simple cuboidal

Question 31

Epithelium of excretory ducts

Answer 31

Stratified cuboidal

Question 32

Function of myoepithelial cells

Answer 32

Contractile function | Help in expelling secretions from the lumen of secretory units and facilitate the movement of saliva in salivary ducts

Question 33

Unstimulated flow

Answer 33

PG - 20% SM - 65% SL - 10% Minor glands - 5%

Question 34

Stimulated flow

Answer 34

PG - 65% SM - 20% SL- 10% Minor glands - 5%

Question 35

Average daily flow of saliva

Answer 35

1.0. - 1.5 L

Question 36

Is saliva isotonic

Answer 36

Initially isotonic but becomes hypotonic as it travels through the ducts