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Structure And Function 2-3 > Parotid Region > Flashcards

Parotid Region Flashcards

1
Q

What is contained in the temporal fossa (A/N)

A
  1. Superficial temporal artery

2. Auriculo-temporal nerve (V3)

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2
Q

What muscle is contained in the temporal fossa

A

The temporalis

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3
Q

What is the boundary to the infratemporal fossa

A

It is inferior to the zygomatic arch and its lateral boundary is the mandible (ramus)

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4
Q

What bones are in the infratemporal fossa (medial to the mandible once you remove it)

A
  1. Superiorly you have the greater wing of the sphenoid
  2. Medially you have the lateral pterygoid plate
  3. Anteriorly you have the posterior side of the maxillary bone
  4. Laterally you have the pterygoid plate
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5
Q

What are the foramena located int eh infratemporal region and what do they contain

A
  1. Foramen ovale-V3 and accessory meningeal artery
  2. Foramen spinosum-middle meningeal artey and nervous spinosus
  3. Mandibular foramen- inferior alveolar N,A,V
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6
Q

What passes through the ptergomaxillary fissure

A

The maxillary artery and branches of V2

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7
Q

What passes through the mandibular foramen

A

The inferior alveolar N,A,V

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8
Q

What part of the mandible contains the teeth

A

The body of the mandible

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9
Q

What is the location of the maxillary artery and what does it supply

A

Located in the infratemporal fossa immediately medial tot he mandible. it supplies the nasal, calvarium, oral cavity, middle ear, and is the location of the muscles of mastication

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10
Q

How do you treat excessive bleeding of the maxillary artery

A

You have to cauterize the branches because ligation is next to impossible

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11
Q

Clinically relavent branches of the maxillary (8 of them)

A 
Anterior tympanic
Middle Meningeal
Accessory Meningeal
Inferior Alveolar
Posterior Superior Alveolar Artery
Descending Palatine
Sphenopalatine artery
Infraorbital artery
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12
Q

Anterior Tympanic Artery
Foramen
Structures supplied

A

Pterotympanic fissure

Middle ear

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13
Q

Middle Meningeal artery
Foramen
Supplies

A

Foramen spinosum

Calvarium/middle cranial fossa

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14
Q

Accessory meningeal artery
Foramen
Supplies

A

Foramen ovale

Calvarium/middle cranial fossa

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15
Q

Inferior alveolar artery
Foramen
Supplies

A

Mandibular foramen

Mandibular teeth: branch mental artery to the chin

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16
Q

Posterior superior alveolar artery
Foramen
Supplies

A

Posterior superior alveolar foramen

Posterior maxillary teeth

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17
Q

Descending palatine artery
Foramen
Supplies

A

Greater and lesser palatine foramena

Hard and soft palate

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18
Q

Sphenopalatine artery
Foramen
Supplies

A

Sphenopalatine foramen

Nasal cavity and the palate

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19
Q

Infraorbital artery
Foramen
Supplies

A

Infraorbital foramen

Skin below the orbit; branches; anterior maxillary–>teeth

20
Q

Where does part one of the maxillary artery course

A

Posterior and medial to the neck of the mandible thought the foraminifera

21
Q

Where does part 2 of the maxillary artery course

A

Superficial to or within the lateral pterygoid

22
Q

Where does part 3 of the maxillary artery course

A

In the pterygopalatine fossa though the foramina

23
Q

Clinical issue with damage to the middle Meningeal artery

A

Epidural hematoma, patient lucid at first (uncal/tonsillar herniation)

24
Q

Deep temporal*

Supplies

A

Temporalis muscle

25
Q

Pterygoid arteries*

Supplies

A

Medial and lateral pterygoid muscles

26
Q

Masseteric Artery*

Supplies

A

Masseter

27
Q

Buccal artery*

Supplies

A

Over buccinator to the cheek

28
Q

Artery of the pterygoid canal*
Foramen
Supplies

A

Pterygoid canal

Upper pharynx/auditory tube

29
Q

Clinical importance of the pterygoid venous plexus

A

Infection can spread from the teeth, to the face, to the brain

Maxillary veins–>pterygoid venous plexus–>anastomoses. With the cavernous sinus and facial vein

30
Q

What is the temporal-mandibular joint

A

The synovial joint between the head of the mandible and the mandibular fossa of the temporal bone

31
Q

What is the articular tubercle

A

A tubercle anterior to the TMJ

32
Q

What is the function of the temporo-mandibular ligament

A

It is a lateral thickening of the capsule and it prevents movement posteriorly and inferiorly.

33
Q

What are two other ligaments associated with the mandible whose functions are unclear

A

The sphenomandibuar ligament and the stylomandibular ligament

34
Q

3 mandibuar movements

A
  1. Depression/elevation (open/close mouth) First hinge int he lower compartment and then slide in the upper compartment
  2. Protrude/retrude
  3. Lateral movement-bot slide upper compartment
35
Q 
Masseter
O
I
A
N
A

O: zygomatic arch
I: ramus of the mandible (lateral side)
A: elevate
N: V3

36
Q 
Temporalis
O
I
A
N
A

O: temporal bone
I: coronoid process of the mandible
A: elevate,retrude(posterior fibers)
N: V3

37
Q 
Medial Pterygoid
O
I
A
N
A

O: medial side of lateral pterygoid plate
I: medial side of the ramus
A: elevate
N: V3

38
Q 
Lateral pterygoid 
O
I
A
N
A

O: lateral side of lateral pterygoid plate and greater wing oft eh sphenoid
I: neck of the mandible and articular disc of TMJ
A: depress and protrude the mandible (open the mouth)
N: V3

39
Q

TMJ jaw lock?

A

Mandible stuck in partial depression because the articular disc is stuck on the articular tubercle

40
Q

What is the parotid gland capsule attached to

A

The zygomatic arch and temporal bone

41
Q

Describe the parotid ducts course

A

Enters the mouth, pierces the buccinator opposite the 2nd mandibular molar tooth, makes a 90 degree turn, and acts as a passive valve

42
Q

Describe the development of the parotid

A

7 weeks

  1. Buds from ectoderm of the primitive mouth
  2. Extend to form cords-develops lumens to form ducts
  3. Ducts join
43
Q

What artery and nerve passes through the parotid

A

The superficial temporal artery and the auriculotemporal nerve

44
Q

What structures can be found within the parotid (4)

A
  1. Cn 7
  2. Retromandibular vein
  3. External carotid artery
  4. Auriculotemporal nerve (V3)
45
Q

What muscle passes between the carotid sheath and the parotid

A

The posterior belly of the digastric

46
Q

Describe the innervation of the parotid gland

A

Visceral motor (parasympathetic) of IX

47
Q

Describe how mumps can affect the parotid and some accompanying symptoms

A

It is a viral infection of the parotid that can cause painful swelling of the capsule which will cause referred pain to the ear due to compression of the auriculotemporal nerve (V3)

Structure And Function 2-3 (14 decks)

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