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Airways > Maxilla, mandible, TMJ > Flashcards

Maxilla, mandible, TMJ Flashcards

1
Q

identify the numbered structures

A
  1. incissive fossa
  2. palatine process of maxilla
  3. horizontal plate
  4. greater palatine foramina
  5. lesser palatine foramina
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2
Q

identify the number structures on the mandible

A
  1. coronoid process
  2. condylar process
  3. ramus
  4. angle of the mandible
  5. body of the mandible
  6. mental tubercle
  7. mental protuberance
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3
Q

Identify the numbered structures on the posterior view of mandible

A
  1. lingula
  2. mandibular foramen
  3. mylohyoid groove
  4. mylohyoid line
  5. submandibular fossa
  6. digastric fossa
  7. mental spines
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4
Q

what group of muscles suspends and stabilizes the larynx

A

extrinsic laryngeal muscles

  • suprahyoid m.m. = suspension
  • infrahyoid m.m. = stabilization
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5
Q

list the suprahyoid muscles

A
  1. digastric
  2. stylohyoid
  3. mylohyoid
  4. geniohyoid
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6
Q

list the infrahyoid muscles

A
  1. sternohyoid
  2. sternothyroid
  3. thyrohyoid
  4. omohyoid
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7
Q

what part of the digastric muscle is attached the mandible? To what structure on mandible?

A

a) anterior belly
b) digastric fossa

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8
Q

what structure on the mandible does the geniohyoid muscle attach to?

A

mental spines

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9
Q

Identify the numbered muscles

A
  1. anterior belly of digastric
  2. mylohyoid
  3. stylohyoid
  4. thyrohyoid
  5. sternothyroid
  6. sternohyoid
  7. omohyoid

NOTE: geniohyoid lies superior to the mylohyoid in this view

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10
Q

what is the fulcrum point of the larynx?

A

the hyoid bone

(fulcrum point means an anatomical structure that acts as a hinge or point of support)

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11
Q

what are the suspension points of the extrinsic laryngeal muscles?

A
  1. mandible
  2. mastoid process
  3. styloid process
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12
Q

what are the stabilization points of extrinsic laryngeal muscles?

A
  1. sternum
  2. scapulae
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13
Q

What joins the anterior and posterior bellies of the diagastric muscle?

A

intermediate tendon

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14
Q

when does the stylohyoid muscle split?

A

prior to insertion on the hyoid bone, (a.k.a the stylohoid sling) it allows the hyoid bone to slide via the intermediate tendon of the digastric muscle

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15
Q

how many muscle make up the floor of the mouth?

A
  1. mylohoid muscle
  2. digastric muscle
  3. stylohyoid muscle
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16
Q

what is the largest facial bone?

A

mandible

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17
Q

Larynx suspension diagram

A
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18
Q

the body of the mandible is at what cervical vertebrae level?

A

C3

19
Q

what part of the mandible would you palpate the facial artery?

A

body of the mandible

20
Q

true or false. this mandible is not normal

A

fasle

it is normal

21
Q

Name the mandibular abnormality

A

macrogenia

22
Q

name the mandibular abnormality

A

micronathia

23
Q

name the mandibular abnormality

A

macrognathia

24
Q

Name the mandibular abnormality

A

mandibular retrognathism

25
Q

Name the mandibular abnormality

A

mandibular prognathism

26
Q

Dr. Hall refers the Temporomandibular joint (TMJ) as a ________ joint?

A

true

27
Q

How many compartments does the TMJ have?

A
  1. inferior - allows rotation
  2. superior - allows gliding
28
Q

what separates the TMJ compartments and allows for the movement actions

A
29
Q

Each TMJ compartment accounts for what % of mouth opening

A

50 % each

29
Q
A
30
Q

what type of action allows the jaw to slightly open

A

hinge action (rotation)

31
Q

what type of action allows the jaw to open widely

A

combination of hinge and gliding action

32
Q

where is the point of rotation with TMJ

A

axis of condylar process

33
Q

which part of the TMJ glides

A

condylar process

34
Q

what is normal distance for mouth opening

A

4 - 5 cm

With full range of motion, the patient should have 4-5 cm between his/her central incisors

35
Q

What technique might be used if you are having trouble scissoring a patient’s mouth open after relaxation?

A

use thumb (at central incisor) & index finger (base of mandible) to pull/glide the mandible forward. then open by rotation (hinge action)

36
Q

What preop evaluation allows us to test the limitation (if any) of the TMJ

A
  1. having the patient open his or her mouth
  2. asking the patinet to protrude their jaw
37
Q

what is the term for a large chin

A

macrogenia

38
Q

what is the term for a small chin

A

microgenia

39
Q

what is the term for a small mandible (or jaw)

A

micrognathia

40
Q

what is macrognathia

A

a large mandible (or jaw)

41
Q

what is the term for a receding jaw

A

mandibular retronagthism

42
Q

what is the term for a protruding jaw

A

mandibular prognathism

Airways (53 decks)

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