Paritid Bed And TMJ Region Flashcards Preview

Anatomy > Paritid Bed And TMJ Region > Flashcards

Flashcards in Paritid Bed And TMJ Region Deck (23):
1

What are the other 2 salivary glands

Submandibular
Sublingual

2

What is the encapsulating layer of fascia covering the parotid gland

Investing layer

3

How does th saliva form the parotid gland get to the mouth

Via parotid duct (which Pierces the Buccinator) to the parotid papilla on the buccal mucosa opposite second molar

4

Where is the parotid gland

Anterior border - posterior masseter
Posterior border - anterior BORDER of SCM
just anterior/inferior to ear lobe

5

What is the nerve supply to the masseter muscle and Buccinator

Masseter - Trigeminal nerve mandibular division
Buccinator - facial

6

How saliva produced

Stimulus - taste/smell food or teething in babies
Nervous system - glands are under autonomic control so if symp innervation saliva sticky if parasymp saliva is runny as supplies secretomotor

7

What cranial nerve supplied parasympathetic nerve innervation to the parotid gland

Glossopharyngeal cranial nerve 9

8

What is the pathway of the Glossopharyngeal nerve CN 9

Tympanic plexus gives off 3 branches ( 1 is lesser petrosal branch which contains Glossopharyngeal)
Preganglionic fibres stretch to otic ganglion
Lesser petrosal nerve then synapse with otic ganglion
Leave ganglion postganglionic fibres formed when lesser petrosal copies with mandibular division of the trigeminal nerve forming the auricular temporal nerve travel to specific site

9

Where is the otic ganglion

Just inferior of the foramen ovale

10

How is calculus in the parotid duct formed

Mineralised saliva blocking gland which causes swelling of face

11

What are the two anatomical divisions of the parotid gland

Has a superficial and a deep layer with a plane in in between

12

What is the artery that travels through the parotid gland

External carotid artery which gives off two terminal branches when in the gland
Superficial temporal and maxillary

13

What are the two veins that join within the parotid gland

Superficial temporal and maxillary to form the retromandibular

14

What nerve enters the parotid gland

Facial nerve which branches to supply the muscles of facial expression

15

What are the branches of the facial nerve

Temporal
Zygomatic
Buccal
Mandibular
Cervical
Posterior auricular

16

Where doe the facial nerve exit the cranial cavity

Internal acoustic meatus and stylomastoid foramen

17

What structures does the parotid gland lie on

Muscles
Posteriorly - scm
Medially - stylohyoid and posterior belly of digrastic
Anteriorly - masseter muscle

Bones
Medially - styloid process
Medial and laterally - ramus of mandible

18

Iatrogenic paralysis

When dental profession numbs the incorrect are causing reversible paralysis of muscle of facial expression

19

What su the gillies approach

Fix fractured zygomatic arch by using anatomical space between fascia and muscle
Relatively non invasive

20

What does Botox do

Irreversible blockage of skeletal muscle neuromuscular junction
Atrophy wasting of the muscle fibres

21

What is the attachment of the masseter

To ramus and angle of mandible extend up to the zygomatic bone

Has a superficial and deep part

22

What is the artery and nerve supplying the masseter

Artery is from the maxillary artery
Nerve is from the mandibular division of the trigeminal nerve
Found at the coronoid notch of the mandible

23

What is the parotid gland

One of the 3 salivary glands
Major
Serous secretion of salvia