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ANATOMY AND PHYSIOLOGY > Muscles and Nerves: Facial expression, extra-ocular, mastication > Flashcards

Muscles and Nerves: Facial expression, extra-ocular, mastication Flashcards

1
Q

Origin of Buccinator

A

Alveolar processes of maxilla and mandible opposite the molar teeth

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2
Q

Insertion of Buccinator

A

Blends into fibers of orbicularis oris

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3
Q

Action of Buccinator

A

Compresses cheeks

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4
Q

Innervation of Buccinator

A

FACIAL N VII

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5
Q

Origin of Orbicularis Oris

A

maxilla and mandible

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6
Q

Insertion of Orbicularis Oris

A

Lips

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7
Q

Action of Orbicularis Oris

A

compresses/ purses LIPS (kissing)

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8
Q

Innervation of Orbicularis Oris

A

FACIAL N VII

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9
Q

Origin of Orbicularis Oculi

A

Medial Margin of Orbit

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10
Q

Insertion of Orbicularis Oculi

A

Skin around eyelids

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11
Q

Action of Orbicularis Oculi

A

Closes eye

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12
Q

Innervation of Orbicularis Oculi

A

FACIAL N VII

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13
Q

Origin of Platysma

A

Fascia covering the superior parts of the pectoralis major and deltoid

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14
Q

Insertion of Platysma

A

Mandible and skin of cheek

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15
Q

Action of Platysma

A

Tenses skin of NECK,

Depresses MANDIBLE

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16
Q

Innervation of Platysma

A

FACIAL N VII

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17
Q

Origin of Inferior Rectus

A

SPHENOID around OPTIC CANAL

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18
Q

Insertion of Inferior Rectus

A

INFERIOR, MEDIAL surface of eyeball

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19
Q

Action of Inferior Rectus

A

Eye looks DOWN

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20
Q

Innervation of Inferior Rectus

A

OCULOMOTOR N III

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21
Q

Origin of Medial Rectus

A

SPHENOID around OPTIC CANAL

22
Q

Insertion of Medial Rectus

A

MEDIAL surface of eyeball

23
Q

Action of Medial Rectus

A

Eye look MEDIALLY

24
Q

Innervation of Medial Rectus

A

OCULOMOTOR N III

25
Q

Origin of Superior Rectus

A

SPHENOID around OPTIC CANAL

26
Q

Insertion of Superior Rectus

A

SUPERIOR surface of eyeball

27
Q

Action of Superior Rectus

A

Eye looks UP

28
Q

Origin of Lateral Rectus

A

SPHENOID around OPTIC CANAL

29
Q

Insertion of Lateral Rectus

A

LATERAL surface of eyeball

30
Q

Action of Lateral Rectus

A

Eye looks LATERALLY

31
Q

Innervation of Lateral Rectus

A

ABDUCENS N VI

32
Q

Origin of Inferior Oblique

A

MAXILLA at ANTERIOR portion of ORBIT

33
Q

Insertion of Inferior Oblique

A

INFERIOR,

LATERAL surface of eyeball

34
Q

Action of Inferior Oblique

A

eye ROLLS,

looks UP and LATERALLY

35
Q

Origin of Superior Oblique

A

SPHENOID around OPTIC CANAL

36
Q

Insertion of Superior Oblique

A

SUPERIOR,

LATERAL surface of eyeball

37
Q

Action of Superior Oblique

A

eye ROLLS,

looks DOWN and LATERALLY

38
Q

Origin of Masseter

A

APONEUROSIS and BONES of the ZYGOMATIC ARCH

39
Q

Insertion of Masseter

A

LATERAL surface and ANGLE of MANDIBULAR RAMUS

40
Q

Action of Masseter

A
  1. Elevates MANDIBLE and CLOSES JAW
  2. ASSISTS in PROTRACTING/ RETRACTING MANDIBLE
  3. ASSISTS in moving MANDIBLE SIDE TO SIDE (LATERAL EXCURSION)
41
Q

Innervation of Masseter

A

TRIGEMINAL N V,

MANDIBULAR BRANCH

42
Q

Origin of Temporalis

A

along TEMPORAL LINES of SKULL

43
Q

Insertion of Temporalis

A
  1. CORONOID PROCESS of MANDIBLE

2. ANTERIOR BORDER of the MANDIBULAR RAMUS

44
Q

Action of Temporalis

A
  1. Elevates MANDIBLE and CLOSES JAW
  2. ASSISTS in RETRACTING MANDIBLE
  3. ASSISTS in moving MANDIBLE SIDE TO SIDE (LATERAL EXCURSION)
45
Q

Innervation of Temporalis

A

TRIGEMINAL N V,

MANDIBULAR BRANCH

46
Q

Origin of Medial Pterygoid

A
  1. MEDIAL surface of teh LATERAL PTERYGOID PLATE

2. adjacent portions of PALATINE BONE and MAXILLA

47
Q

Insertion of Medial Pterygoid

A

MEDIAL surface of MANDIBULAR RAMUS

48
Q

Action of Medial Pterygiod

A
  1. Elevates MANDIBLE and CLOSES JAW

2. Moves MANDIBLE SIDE TO SIDE (LATERAL EXCURSION)

49
Q

Innervation of Medial Pterygiod

A

TRIGEMINAL N V,

MANDIBULAR BRANCH

50
Q

Origin of Lateral Pterygoid

A
  1. LATERAL surface of LATERAL PTERYGOID PLATE

2. GREATER WING of SPHENOID

51
Q

Insertion of Lateral Pterygoid

A

ANTERIOR PART of the NECK of the MANDIBULAR CONDYLE

52
Q

Innervation of Lateral Pterygoid

A

TRIGEMINAL N V,

MANDIBULAR BRANCH

ANATOMY AND PHYSIOLOGY (8 decks)

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