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Trunk Muscle table > Neck and Head > Flashcards

Neck and Head Flashcards

1
Q

Sternocleidomastoid Origin

A
  1. Manubrium 2. Medial 1/3 of clavicle
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2
Q

Sternocleidomastoid Insertion

A

Mastoid Process

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3
Q

Sternocleidomastoid Innervation

A

Accessory Nerve (CN XI)

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4
Q

Sternocleidomastoid Action

A
  1. Flexes the neck 2. Rotates head to opposite side
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5
Q

Digastric Origin

A

Posterior belly: Mastoid process. Anterior belly: Inner mandible, just lateral to the midline

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6
Q

Digastric Insertion

A

Hyoid Bone

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7
Q

Digastric Innervation

A

Posterior Belly: Facial nerve (CN VII) Anterior Belly: Trigeminal nerve (CNV3)

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8
Q

Digastric Action

A
  1. Moves hyoid superiorly and posteriorly in swollowing 2. Opens jaw against resistance
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9
Q

Omohyoid Origin

A

Inferior belly: Superior margin of scapula. Superior belly: Hyoid

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10
Q

Omohyoid Insertion

A

Intermediate tendon attaches to posterior clavicle and 1st rib by fascial sling

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11
Q

Omohyoid Innervation

A

Branches of Ansa cervicalis

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12
Q

Omohyoid Action

A

Strap muscles as a group depress larynx, hyoid bone and floor of mouth during swallowing

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13
Q

Sternohyoid Origin

A

Manubrium

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14
Q

Sternohyoid Insertion

A

Hyoid bone

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15
Q

Sternohyoid Innervation

A

Branches of Ansa cervicalis

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16
Q

Sternohyoid Action

A

Strap muscles as a group depress larynx, hyoid bone, and floor of mouth during swallowing

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17
Q

Sternothyroid Origin

A

Manubrium

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18
Q

Sternothyroid Insertion

A

Thyroid cartilage

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19
Q

Sternothyroid Innervation

A

Branches of ansa cervicalis

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20
Q

Sternothyroid Action

A

Strap muscles as a group depress larynx, hyoid bone, and floor of mouth during swallowing

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21
Q

Ansa cervicalis innervates

A

Omohyoid, Sternohyoid, Sthernothyroid

22
Q

Strap muscles

A

Thyrohyoid, Sternothyroid, Sternohyoid, Omohyoid

23
Q

Thyrohyoid Origin

A

Thyroid cartilage

24
Q

Thyrohyoid Insertion

A

Hyoid Bone

25
Q

Thyrohyoid Innervation

A

C1 fibers that run with hypoglossal nerve (CN XII)

26
Q

Thyrohyoid Action

A

Strap muscles as a group depress larynx, hyoid bone, and floor of mouth during swallowing

27
Q

Masseter Origin

A

Zygomatic arch

28
Q

Masseter Insertion

A

Ramus of mandible

29
Q

Masseter Innervation

A

Mandibular division of CN V (V3)

30
Q

Masseter Action

A
  1. Closes mandible. 2. Protracts mandible 3. Deep fibers retract mandible
31
Q

Temporalis Origin

A

Temporal fossa

32
Q

Temoralis Insertion

A

Coronoid process of mandible

33
Q

Temporalis Innervation

A

Mandibular division of CN V (V3)

34
Q

Mandibular division of CN V (V3) innervates

A

Masseter, Temporalis, Lateral Pterygoid, Medial Pterygoid

35
Q

Lateral Pterygoid Origin

A

Lateral pterygoid plate (lateral surface)

36
Q

Lateral Pterygoid Insertion

A

1) Neck of mandible. 2)TM joint capsule 3)Articular disk

37
Q

Lateral Pterygoid Innervation

A

Mandibular division of cranial nerve V (V3)

38
Q

Lateral Pterygoid Action

A

1)Opens Mandible 2)Protracts mandible 3)Protracts during abduction (opposite side to abduction)

39
Q

Temporalis Action

A

1) Closes Mandible 2) Retracts Mandible. 3) Abduct towards side of abduction

40
Q

Medial Pterygoid Origin

A

Lateral pterygoid plate, medial side

41
Q

Medial Pterygoid Insertion

A

Ramus of mandible, inner surface

42
Q

Medial Pterygoid Innervation

A

Mandibular Division of CN V (V3)

43
Q

Medial Pterygoid Action

A

Closes Mandible

44
Q

Longus Capitis Origin

A

Transverse processes of mid-cervical vertebrae

45
Q

Longus Capitis Insertion

A

Occipital Bone

46
Q

Longus Capitis Innervation

A

Segmental cervical ventral rami

47
Q

Longus Capitis Action

A

Flexes head and neck

48
Q

Longus Coli Origin

A

Vertical portion: Lower cervical vertibrae.
Upper Oblique portion: upper cervical bodies.
Lower ObliquePortion: lower cervical bodies

49
Q

Longus Coli Insertion

A

Vertical portion: upper cervical vertebrae.
Upper Oblique portion: Mid-cervical transverse processes
Lower Oblique portion: Mid cervical transverse Processes

50
Q

Longus Coli Innervation

A

Segmental Ventral Rami

51
Q

Longus Coli Action

A

Flexes neck

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