Neck Muscles and Fascia Flashcards Preview

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Flashcards in Neck Muscles and Fascia Deck (47):
0

Origin for the Platysma Muscle

Superficial fascia of deltoid and and pectoral regions

1

Insertion of Platysma muscle

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

2

What are the 2 actions of the Platysma muscle?

1. Stretches tight the skin of the neck
2. Depress Mandible

3

What nerve and what specific branch innervates the Platysma muscle?

Facial Nerve (CN VII), Cervical branch

4

Origin of the Sternocleidomastoid muscle

Manubrium and Clavicle (medial third of clavicle)

5

Insertion of the Sternocleidomastoid muscle

Mastoid Process and lateral half of superior nuchal line

6

What are the two actions of the Sternocleidomastoid muscle?

1. Bilaterally - Flexes neck
2. Individually - draws head to shoulder and turns face to opposite side

7

What two nerves innervate the Sternocleidomastoid muscle?

1. Spinal Accessory n.
2. APR of C2 and C3

8

Origin of Trapezius muscle

Spines of all thoracic and cervical vertebrae

9

Insertion of Trapezius muscle

Spine and Acromion of scapula
Lateral third of clavicle

10

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

1. Bilaterally - extends head
2. Individually - tilts chin to opposite side

11

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

1. Rotates and adducts scapula
2. Elevates scapula and clavicle

12

What innervates the Trapezius?

Spinal Accessory n.
APR of C3 and C4

13

Name all eight muscles of the posterior triangle of the neck

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

14

Origin of the Splenius Capitis

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

15

Insertion of Splenius Capitis

Mastoid Process and Nuchal Line (superior)

16

Two actions of the Splenius Capitis

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

17

What innervates the Splenius Capitis muscle?

Segmented PPR of cervical spinal nerves

18

What is the origin of the Levator Scapulae muscle

Transverse processes of 4 upper cervical vertebrae

19

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

Scapula (superior portion of the lateral border)

20

What is the action of the Levator Scapulae

Elevates and rotates scapula

21

What nerve innervates the Levator Scapulae?

Dorsal Scapular Nerve

22

Origin of Posterior Scalene muscle

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

23

Insertion of the Posterior Scalene?

Second rib (superior aspect)

24

What are the 2 actions of the Posterior Scalene muscle?

1. Bilaterally - Flexes neck
2. Individually - Flexes neck laterally

25

Innervation of Posterior Scalene?

APR of C5 to C8

26

Origin of the Middle Scalene muscle

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

27

Insertion of Middle Scalene

First Rib (Superior aspect)

28

What are the two actions of the Middle Scalene?

1. Bilaterally - Flexes Neck
2. Individually - Flexes neck laterally

29

What is the innervation of the Middle Scalene muscle

APR of C3 and C4

30

Origin of Anterior Scalene

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

31

Insertion of Anterior Scalene

Scalene tubercle of First rib

32

What are the two actions of the Anterior Scalene?

1. Bilaterally - Flexes Neck
2. Individually - Flexes neck laterally

33

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

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

34

Innervation of the Anterior Scalene muscle

APR of C5 to C8

35

What are the two subdivisions of the Posterior Triangle?

1. Occipital
2. Supraclavicular

36

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

Omohyoid, Sternocleidomastoid, Clavicle

37

Three aspects of the Occipital Triangle?

Sternocleidomastoid, Trapezius, Omohyoid

38

Inferior border of the Posterior Triangle?

Clavicle

39

Anterior border of the Posterior Triangle?

Sternocleidomastoid muscle

40

What muscle is housed in the Superficial Fascia?

Platysma

41

The four fascias of the Deep Fascia of the neck

1. Investing Fascia
2. Pretrachial Fascia
3. Carotid Sheath
4. Prevertebral Fascia

42

What three things are found within the Carotid Sheath?

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

43

Two muscles found within the Investing Fascia of the neck

Sternocleidomastoid m. & Trapezius m.

44

Three things found in the Pretrachial Fascia

1. Thyroid Gland
2. Trachea
3. Esophagus

45

What is housed in the Pre-vertebral Fascia?

Vertebrae and deep back muscles

46

What is one thing specifically different about the Pretrachial Fascia?

It does NOT envelope any muscles