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Anatomy Exam 3 > Lateral Cervical Region > Flashcards

Lateral Cervical Region Flashcards

1
Q

Platysma origin

A

Skin over lower neck and upper lateral thorax

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2
Q

Platysma insertion

A

Mandible (inferior border) & skin over lower face and angle of the mouth

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3
Q

Platysma innervation

A

Cervical branch of facial n. (CN VII)

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4
Q

Platysma blood supply

A

Facial a.

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5
Q

Platysma actions

A
  • Depresses and wrinkles skin of lower face & mouth
  • Tenses skin of neck
  • Aids forced depression of mandible
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6
Q

Sternocleidomastoid origin

A
  • Sternal head: sternum (manubrium)

- Clavicular head: clavicle (medial 1/3)

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7
Q

Sternocleidomastoid insertion

A
  • Temporal bone (mastoid process)

- Occipital bone (superior nuchal line)

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8
Q

Sternocleidomastoid innervation

A
  • Motor: spinal accessory n. (CN XI)

- Pain & proprioception: cervical plexus C2& C3

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9
Q

Sternocleidomastoid blood supply

A

Occipital a.

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10
Q

Sternocleidomastoid actions

A
  • Unilateral: tilts head to same side, rotates to opposite

- Bilateral: extends head, aids in respiration when head is fixed

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11
Q

Trapezius (descending) origin

A
  • Occipital bone

- Spinous process C1-C7

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12
Q

Trapezius (descending) insertion

A

Clavicle (lateral 1/3)

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13
Q

Trapezius (descending) innervation

A
  • Motor: spinal accessory n. (CN XI)

- Pain & proprioception: Cervical plexus C2 & C3

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14
Q

Trapezius (descending) blood supply

A

Transverse cervical a.

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15
Q

Trapezius (descending) actions

A
  • Draws scapula obliquely upward

- Rotates glenoid cavity superiorly

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16
Q

Nerves that make up Erb’s point

A
  • Great auricular n.
  • Lesser occipital n.
  • Transverse cervical n.
  • Supraclavicular n.
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17
Q

Triangles within Anterior Cervical Region

A
  • Submandibular (digastric) triangle
  • Submental triangle
  • Muscular triangle
  • Carotid triangle
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18
Q

Contents of Submandibular (digastric) triangle

A
  • Submandibular gland & lymph nodes
  • hypoglossal n. (CN XII)
  • Facial a. & v.
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19
Q

Contents of Submental triangle

A

Submental lymph nodes

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20
Q

Contents of Muscular triangle

A
  • Sternothyroid m.
  • Sternohyoid m.
  • Thyroid & parathyroid glands
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21
Q

Contents of Carotid triangle

A
  • Carotid bifurcation
  • Carotid body
  • hypoglossal n. (CN XII)
  • vagus n. (CN X)
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22
Q

Contents of Sternocleidomastoid region

A
  • Sternocleidomastoid m.
  • Carotid a., Internal jugular v., vagus n (CN X)
  • Jugular lymph nodes
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23
Q

Contents within Lateral Cervical Region

A
  • Omoclavicular (subclavian) triangle

- Occipital triangle

24
Q

Contents within Omoclavicular (subclavian) triangle

A
  • Subclavian a.
  • Subscapular a.
  • Supraclavicular n.
25
Q

Contents within Occipital triangle

A
  • spinal accessory n. (CN XI)
  • trunks of brachial plexus
  • transverse cervical a.
  • cervical plexus (posterior branches)
26
Q

Contents within Posterior Cervical Region

A
  • Nuchal mm.
  • vertebral a.
  • cervical plexus
27
Q

Omohyoid origin

A

Superior border of the scapula

28
Q

Omohyoid insertion

A

Hyoid bone

29
Q

Omohyoid innervation

A

Ansa cervicalis (C1-C3)

30
Q

Omohyoid blood supply

A

Infrahyoid a.

31
Q

Omohyoid actions

A
  • Depress hyoid

- Draw larynx and hyoid downward for phonation and swallowing

32
Q

Anterior scalene origin

A

Anterior tubercles of transverse processes C3-C6

33
Q

Anterior scalene insertion

A

Scalene tubercle of 1st rib

34
Q

Anterior scalene innervation

A

Direct branches of cervical and branchial plexuses (C3-C8)

35
Q

Anterior scalene blood supply

A

Ascending cervical a.

36
Q

Anterior scalene actions

A

Mobile ribs:
- Elevate upper ribs during forced respiration

When ribs fixed:

  • unilaterally: bends cervical spine to same side
  • bilaterally: flex neck
37
Q

Middle scalene origin

A
  • Transverse process of C1 & C2

- Posterior tubercles of transverse processes C3-C7

38
Q

Middle scalene insertion

A

1st rib, posterior to groove for subclavian a,

39
Q

Middle scalene innervation

A

Direct branches of cervical and branchial plexuses (C3-C8)

40
Q

Middle scalene blood supply

A

Ascending cervical a.

41
Q

Middle scalene actions

A

Mobile ribs:
- Elevate upper ribs during forced respiration

When ribs fixed:

  • unilaterally: bends cervical spine to same side
  • bilaterally: flex neck
42
Q

Posterior scalene origin

A

Posterior tubercles of transverse processes C5-C7

43
Q

Posterior scalene insertion

A

Outer surface if 2nd rib

44
Q

Posterior scalene innervation

A

Direct branches of cervical and brachial plexuses (C3-C8)

45
Q

Posterior scalene blood supply

A

Ascending cervical a.

46
Q

Posterior scalene actions

A

Mobile ribs:
- Elevate upper ribs during forced respiration

When ribs fixed:

  • unilaterally: bends cervical spine to same side
  • bilaterally: flex neck
47
Q

Levator scapulae origin

A

Transverse process of C1-C4

48
Q

Levator scapulae insertion

A

Superior angle of scapula

49
Q

Levator scapulae innervation

A

Dorsal scapular n. (C4 & C5)

50
Q

Levator scapulae blood supply

A

Dorsal scapular a.

51
Q

Levator scapulae actions

A
  • Draw scapula medially upward while moving inferior angle of scapula medially
  • Incline neck to same side
52
Q

Splenius capitis and cervicis origins

A

Capitis: ligamentum nuchae & spinous processes of C7-T3

Cervicis: spinous processes of T3-T6

53
Q

Splenius capitis and cervicis insertions

A

Capitis:

  • lateral superior nuchal line of occipital bone
  • mastoid process of temporal bone

Cervicis: Transverse processes of C1 & C2

54
Q

Splenius capitis and cervicis innervation

A

Spinal nn. C1-C6 (dorsal rami, lateral branches)

55
Q

Splenius capitis and cervicis blood supply

A

Muscular branches of aorta

56
Q

Splenius capitis and cervicis actions

A
  • bilaterally: extend cervical spine & head

- unilaterally: flex & rotate head to same side

Anatomy Exam 3 (2 decks)

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