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Head and Neck Anatomy -ATSU > Neck Muscles and Fascia > Flashcards

Neck Muscles and Fascia Flashcards

1
Q

Insertion of Platysma muscle

A

Mandible

–>(specifically on the inferior border with some fibers sweeping upward and blending with Risorius)

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2
Q

What are the 2 actions of the Platysma muscle?

A
  1. Stretches tight the skin of the neck

2. Depress Mandible

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3
Q

What nerve and what specific branch innervates the Platysma muscle?

A

Facial Nerve (CN VII), Cervical branch

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4
Q

Origin of the Sternocleidomastoid muscle

A

Manubrium and Clavicle (medial third of clavicle)

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5
Q

Insertion of the Sternocleidomastoid muscle

A

Mastoid Process and lateral half of superior nuchal line

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6
Q

What are the two actions of the Sternocleidomastoid muscle?

A
  1. Bilaterally - Flexes neck

2. Individually - draws head to shoulder and turns face to opposite side

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7
Q

What two nerves innervate the Sternocleidomastoid muscle?

A
  1. Spinal Accessory n.

2. APR of C2 and C3

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8
Q

Origin of Trapezius muscle

A

Spines of all thoracic and cervical vertebrae

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9
Q

Insertion of Trapezius muscle

A

Spine and Acromion of scapula

Lateral third of clavicle

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10
Q

What are the two actions of the Trapezius on the head?

A
  1. Bilaterally - extends head

2. Individually - tilts chin to opposite side

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11
Q

What are the two actions of the Trapezius on the limb girdle?

A
  1. Rotates and adducts scapula

2. Elevates scapula and clavicle

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12
Q

What innervates the Trapezius?

A

Spinal Accessory n.

APR of C3 and C4

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13
Q

Name all eight muscles of the posterior triangle of the neck

A

Platysma, Sternocleidomastoid, Trapezius, Splenius Capitis, Levator Scapulae, Posterior Scalene, Middle Scalene, Anterior Scalene

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14
Q

Origin of the Splenius Capitis

A

Ligamentum Nuchae (lower part) and Cervical Spines (lower)

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15
Q

Insertion of Splenius Capitis

A

Mastoid Process and Nuchal Line (superior)

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16
Q

Two actions of the Splenius Capitis

A
  1. Bilateral - Extends head

2. Individually - Flexes head laterally, rotates head to ipsilateral side

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17
Q

What innervates the Splenius Capitis muscle?

A

Segmented PPR of cervical spinal nerves

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18
Q

What is the origin of the Levator Scapulae muscle

A

Transverse processes of 4 upper cervical vertebrae

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19
Q

The Levator Scapulae inserts in only place. What is the insertion?

A

Scapula (superior portion of the lateral border)

20
Q

What is the action of the Levator Scapulae

A

Elevates and rotates scapula

21
Q

What nerve innervates the Levator Scapulae?

A

Dorsal Scapular Nerve

22
Q

Origin of Posterior Scalene muscle

A

Transverse processes on portion of cervical vertebrae (C5 and C6)

23
Q

Insertion of the Posterior Scalene?

A

Second rib (superior aspect)

24
Q

What are the 2 actions of the Posterior Scalene muscle?

A
  1. Bilaterally - Flexes neck

2. Individually - Flexes neck laterally

25
Q

Innervation of Posterior Scalene?

A

APR of C5 to C8

26
Q

Origin of the Middle Scalene muscle

A

Transverse Processes of Cervical portion of vertebrae (C2 to C7)

27
Q

Insertion of Middle Scalene

A

First Rib (Superior aspect)

28
Q

What are the two actions of the Middle Scalene?

A
  1. Bilaterally - Flexes Neck

2. Individually - Flexes neck laterally

29
Q

What is the innervation of the Middle Scalene muscle

A

APR of C3 and C4

30
Q

Origin of Anterior Scalene

A

Transverse Processes of Cervical portion of vertebrae (C3 to C6)

31
Q

Insertion of Anterior Scalene

A

Scalene tubercle of First rib

32
Q

What are the two actions of the Anterior Scalene?

A
  1. Bilaterally - Flexes Neck

2. Individually - Flexes neck laterally

33
Q

Other than their respective main actions, the scalene muscles and sternocleidomastoid muscles aid in what other action of the body?

A

Respiration. They aid in inspiration by elevating the ribs and sternum

34
Q

Innervation of the Anterior Scalene muscle

A

APR of C5 to C8

35
Q

What are the two subdivisions of the Posterior Triangle?

A
  1. Occipital

2. Supraclavicular

36
Q

What are the three things that make up the Supraclavicular triangle?

A

Omohyoid, Sternocleidomastoid, Clavicle

37
Q

Three aspects of the Occipital Triangle?

A

Sternocleidomastoid, Trapezius, Omohyoid

38
Q

Inferior border of the Posterior Triangle?

A

Clavicle

39
Q

Anterior border of the Posterior Triangle?

A

Sternocleidomastoid muscle

40
Q

What muscle is housed in the Superficial Fascia?

A

Platysma

41
Q

The four fascias of the Deep Fascia of the neck

A
  1. Investing Fascia
  2. Pretrachial Fascia
  3. Carotid Sheath
  4. Prevertebral Fascia
42
Q

What three things are found within the Carotid Sheath?

A
  1. Common Carotid a.
  2. Vagus n.
  3. Internal Jugular v.
43
Q

Two muscles found within the Investing Fascia of the neck

A

Sternocleidomastoid m. & Trapezius m.

44
Q

Three things found in the Pretrachial Fascia

A
  1. Thyroid Gland
  2. Trachea
  3. Esophagus
45
Q

What is housed in the Pre-vertebral Fascia?

A

Vertebrae and deep back muscles

46
Q

What is one thing specifically different about the Pretrachial Fascia?

A

It does NOT envelope any muscles

47
Q

Origin for the Platysma Muscle

A

Superficial fascia of deltoid and and pectoral regions

Head and Neck Anatomy -ATSU (35 decks)

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