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Kinesiology > Ventilation & Mastication > Flashcards

Ventilation & Mastication Flashcards

1
Q

Purpose of the fibrocartilaginous disc

A
  • increases congruence and stability
  • decreases contact pressure
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2
Q

Describe the temporal mandibular joint structure

A
  • forms the posterior attachment for the fibrocartilaginous disc
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3
Q

Where does the fibrocartilaginious disc attach

A
  • attaches to the superior and inferior parts of the retrodiscal lamina
  • attaches to the mandible
  • attaches to the anterior aspect of the condyle, lateral pterygoid, and articular eminence
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4
Q

Describe protrusion

A
  • anterior and inferior translation of the mandibular condyle
  • push mandibular anteriorly
  • mandibular condyle glides anteriorly on articular eminence
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5
Q

Describe retrusion

A
  • posterior and superior translation on of the mandibular condyle
  • pull mandible posteriorly
  • mandible glides posteriorly on articular eminence
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6
Q

ROM for protrusion and retursion

A

Protrusion: 3-6 mm
Retrusion: 3-4 mm

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7
Q

Describe lateral excursion

A
  • ipslat. condyle becomes a pivot after translating posteriorly
  • contralat. condyle glides anteriorly, inferior, and swings medially
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8
Q

ROM for opening

A
  • mandibular depression
  • 35-50 mm
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9
Q

Functional ROM for opening

A
  • 25-35 mm
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10
Q

Describe closing

A
  • mandibular elevation
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11
Q

Describe the movements of the mandibular condyle during opening

A
  • 14 mm of anterior movement when fully open
  • disc translate 70 mm anterior and inferior
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12
Q

TMJ opening early phase

A
  • first 35-50%
  • mandible rolls posteriorly on disc
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13
Q

TMJ opening late phase

A
  • remainder
  • disc & condyle translate anteriorly on the articular eminenece
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14
Q

Describe the temporalis and masseter muscle actions

A
  • bilaterally elevate mandible
  • unilaterally excurse to the same side
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15
Q

Describe muscle actions of temporalis

A
  • retrudes the mandible
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16
Q

Describe medial pterygoid muscle actions

A
  • bilaterally elevates and protrudes the mandible
  • unilaterally laterally excurses the mandible on the contralateral side
17
Q

Describe lateral pterygoid superior head muscle actions

A
  • controls the disc and helps position the disc as mandible goes into protrusion/retrusion and elevation/depression
18
Q

Describe lateral pterygoid inferior head muscle actions

A
  • primary mandibular depressor
  • protrudes the mandible
  • lateral excursion on the contralateral side
19
Q

Describe lateral excursion

A
  • ipsilateral masseter and temporalis
  • contralateral medial and lateral pterygoid
20
Q

What muscles open the mouth

A
  • inferior head of the lateral pterygoid
  • suprahyoids
21
Q

What muscles close the mouth

A
  • masseter
  • temporalis
  • medial pterygoid
  • superior lateral pterygoid eccentrically controls the disc during closing
22
Q

Forward head posture is coupled with what actions

A
  • protrusion and depression of the mandible
23
Q

What muscles are tensioned in forward head posture

A
  • hyoid muscles
24
Q

Which ribs are true ribs

A
  • ribs 1-7
25
Q

Which ribs are false ribs

A
  • ribs 8-10
26
Q

Where is the costochondral joint

A
  • between the rib and cartilage
27
Q

Where is the chondrosternal joint

A
  • between the cartilage and sternum
28
Q

What ligament holds together the costotransverse joints

A
  • costotransverse ligament capsule
29
Q

Describe vertebrae T11 and T12

A
  • they have full coastal facets for respective ribs
  • they don’t have costotransverse joints
30
Q

Where is T1 vertebra located

A
  • demi facet of half of rib 2
31
Q

Describe ribs mechanics during inhalation

A
  • rib cage swings forward (anteriorly) and up (superiorly) a little bit
  • as rib cage swings upward it rotates posteriorly
32
Q

Which way does the rib cage rotate during exhalation

A
  • rib cage rotates anteriorly
33
Q

What muscles contribute to quiet inspiration (inhalation at rest)

A
  • diaphragm (mainly
  • intercostales
  • scalenes
34
Q

What muscles contribute to forced inhalation

A
  • serratus posterior superior
  • serratus posterior inferior
  • levator costarum
  • sternoclaudomastoid
  • latissimuss
  • iliocostalis thoracis & cervicis
  • pectoralis major
  • quadratus lumborum
35
Q

Describe tripod breathing posture

A
  • slouching over with your hands on your knees
  • this posture is mechanically better for breathing
36
Q

What are the muscles of quiet exhalation

A
  • none because it is passive
37
Q

What are the muscles of forces exhalation

A
  • abdominals: rectus abdominis, external oblique, internal oblique, & transversus abdominis
  • transverse thoracis
  • internal intercostals (interosseous fibers)

Kinesiology (10 decks)

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